List of Illinois railroads
The following railroads operating in the U.S. state of Illinois.
Current railroads
Common freight carriers
- A&R Terminal Railroad
- AgRail
- Ag Valley Railroad
- Alton and Southern Railway
- Belt Railway of Chicago
- Bloomer Line
- BNSF Railway
- Burlington Junction Railway also operates City of Rochelle Railroad
- Canadian National Railway through subsidiaries Chicago Central and Pacific Railroad, Elgin, Joliet and Eastern Railway, Grand Trunk Western Railroad, Illinois Central Railroad, and Wisconsin Central Ltd.
- Canadian Pacific Railway through subsidiaries Dakota, Minnesota and Eastern Railroad and Soo Line Railroad
- Chicago–Chemung Railroad
- Chicago Port Railroad
- Chicago Rail Link
- Chicago South Shore and South Bend Railroad
- Chicago Terminal Railroad
- Cicero Central Railroad
- Crab Orchard and Egyptian Railroad
- Coffeen and Western Railroad
- CSX Transportation including subsidiary Baltimore and Ohio Chicago Terminal Railroad
- Decatur Central Railroad
- Decatur & Eastern Illinois Railroad
- Decatur Junction Railway
- Eastern Illinois Railroad
- Effingham Railroad
- Evansville Western Railway
- FFG&C Railroad
- Great Lakes Terminal Railway
- Hussey Terminal Railroad
- Illinois Railway
- Illinois and Midland Railroad
- Illinois Western Railroad
- Indiana Rail Road
- Indiana Harbor Belt Railroad
- Iowa Interstate Railroad operates Lincoln and Southern Railroad
- Joppa and Eastern Railroad
- Kankakee, Beaverville and Southern Railroad
- Kansas City Southern Railway including subsidiary Gateway Eastern Railway
- Keokuk Junction Railway
- KM Railways
- Manufacturers' Junction Railway
- Norfolk Southern Railway
- Peru Industrial Railroad
- Pioneer Industrial Railway
- Port Harbor Railroad
- Riverport Railroad
- Shawnee Terminal Railway
- South Chicago and Indiana Harbor Railway
- Tazewell and Peoria Railroad operates Peoria and Pekin Union Railway
- Terminal Railroad Association of St. Louis
- Toledo, Peoria and Western Railway
- Union Pacific Railroad including subsidiary Southern Illinois and Missouri Bridge Company
- Vandalia Railroad
- Vermilion Valley Railroad operates FNG Logistics Company
- Wisconsin and Southern Railroad
Private freight carriers
- Kaskaskia Regional Port District
- Mokena Illinois Railroad
- Mars Candy
- ADM Milling
- Hoffman Transportation
- Material Sciences Corporation
- Buzzi Unicem
- Bulkmatic Railroad
- R Bult Rail Lines
- Centerpoint Transportation, LLC
- *Operates the Joliet Terminal Railroad
- Aux Sable Midstream
- Ingredion
Proposed Railroads
- Great Lakes Basin Transportation
- Crete Terminal Railroad
- 505 Railroad
- Beecher Industrial Railway
- Eastern Joliet Railway
Passenger carriers
- Amtrak
- Chicago Transit Authority
- Fox River Trolley Museum
- Illinois Railway Museum
- Metra
- MetroLink
- Monticello Railway Museum
- Silver Creek and Stephenson Railroad
- South Shore Line
Defunct railroads
| Name | Mark | System | From | To | Successor | Notes |
| Addison Railroad | IC | 1890 | 1892 | Chicago, Madison and Northern Railroad | - | |
| Albany Railroad Bridge Company | CNW | 1857 | 1909 | Chicago and North Western Railway | - | |
| Alton Railroad | A | GM&O | 1931 | 1947 | Gulf, Mobile and Ohio Railroad | - |
| Alton and Eastern Railroad | ITC | 1925 | 1937 | Illinois Terminal Railroad | - | |
| Alton and St. Louis Railroad | GM&O | 1859 | 1899 | Chicago and Alton Railroad | - | |
| Alton and Sangamon Railroad | GM&O | 1847 | 1852 | Chicago and Mississippi Railroad | - | |
| Alton and Southern Railroad | MP/ SSW | 1910 | 1968 | Alton and Southern Railway | - | |
| Alton and Southern Railway | MP/ SSW | 1911 | 1913 | Alton and Southern Railroad | - | |
| Alton Terminal Railway | ITC | 1889 | 1937 | Illinois Terminal Railroad | - | |
| American Bottom Lime, Marble and Coal Company | 1857 | 1873 | East St. Louis and Carondelet Railway | - | ||
| American Central Railway | CB&Q | 1859 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| Ashdale and Thomson Railway | MILW | 1902 | 1903 | Chicago, Milwaukee and St. Paul Railway | - | |
| Atchison, Topeka and Santa Fe Railroad | ATSF | 1889 | 1895 | Atchison, Topeka and Santa Fe Railway | - | |
| Atchison, Topeka and Santa Fe Railroad in Chicago | ATSF | 1887 | 1902 | Atchison, Topeka and Santa Fe Railway | - | |
| Atchison, Topeka and Santa Fe Railway | ATSF | ATSF | 1895 | 1996 | BNSF Railway | - |
| Atlanta and Lawndale Railroad | GM&O | 1905 | 1915 | Chicago and Alton Railroad | - | |
| Atlantic and Pacific Railroad | MILW | 1865 | 1872 | Chicago and Pacific Railroad | - | |
| Aurora Branch Railroad | CB&Q | 1849 | 1852 | Chicago and Aurora Railroad | - | |
| Baltimore and Ohio Railroad | B&O, BO | B&O | 1874 | 1987 | Chesapeake and Ohio Railway | - |
| Baltimore and Ohio and Chicago Railroad | B&O | 1876 | 1949 | Baltimore and Ohio Railroad | - | |
| Baltimore and Ohio Connecting Railroad | B&O | 1892 | 1990 | CSX Transportation | - | |
| Baltimore and Ohio Southwestern Railroad | B&O | 1899 | 1949 | Baltimore and Ohio Railroad | - | |
| Baltimore and Ohio Southwestern Railway | B&O | 1893 | 1899 | St. Louis, Springfield and Vincennes Railway | - | |
| Baltimore, Pittsburgh and Chicago Railway | B&O | 1873 | 1876 | Baltimore and Ohio and Chicago Railroad | - | |
| Belleville and Carondelet Railroad | IC | 1881 | 1897 | St. Louis, Alton and Terre Haute Railroad | - | |
| Belleville, Centralia and Eastern Railroad | SOU | 1889 | 1889 | Louisville, Evansville and St. Louis Consolidated Railroad | - | |
| Belleville City Railway | IC | 1867 | 1895 | St. Louis, Belleville and Southern Railway | - | |
| Belleville and Eldorado Railroad | IC | 1861 | 1897 | St. Louis, Alton and Terre Haute Railroad | - | |
| Belleville and Illinoistown Railroad | NYC | 1849 | 1856 | Terre Haute, Alton and St. Louis Railroad | - | |
| Belleville and O'Fallon Railroad | L&N | 1869 | 1871 | St. Louis and Southeastern Railway | - | |
| Belleville and Southern Illinois Railroad | IC | 1857 | 1897 | St. Louis, Alton and Terre Haute Railroad | - | |
| Benton Southern Railroad | IC | 1915 | 1946 | Illinois Central Railroad | - | |
| Bloomington and Ohio River Railroad | WAB | 1869 | 1872 | Chicago and Paducah Railroad | - | |
| Bloomington and Pekin Railroad | NYC | 1853 | 1867 | Danville, Urbana, Bloomington and Pekin Railroad | - | |
| Blue Island Railroad | IC | 1891 | 1987 | Northeast Illinois Regional Commuter Railroad Corporation | - | |
| Bridgeport and South Chicago Railroad | B&O | 1887 | 1890 | Chicago and Northern Pacific Railroad | - | |
| Bureau County Mineral Railway | MILW | 1904 | 1909 | Rochelle and Southern Railway | - | |
| Burlington, Monmouth and Illinois River Railway | MSTL | 1875 | 1881 | Peoria and Farmington Railway | - | |
| Burlington Northern Inc. | BN | 1970 | 1981 | Burlington Northern Railroad | - | |
| Burlington Northern Railroad | BN | 1981 | 1996 | BNSF Railway | - | |
| Cairo and St. Louis Railroad | GM&O | 1865 | 1881 | St. Louis and Cairo Railroad | - | |
| Cairo Terminal Railroad | CTML | 1982 | 1996 | Shawnee Terminal Railway | - | |
| Cairo and Thebes Railroad | MP | 1905 | 1956 | Missouri Pacific Railroad | - | |
| Cairo and Vincennes Railroad | NYC | 1867 | 1880 | Cairo and Vincennes Railway | - | |
| Cairo and Vincennes Railway | NYC | 1880 | 1881 | Wabash, St. Louis and Pacific Railway | - | |
| Cairo, Vincennes and Chicago Railway | NYC | 1889 | 1913 | Cleveland, Cincinnati, Chicago and St. Louis Railway | - | |
| Calumet and Blue Island Railway | EJ&E | 1889 | 1897 | Chicago, Lake Shore and Eastern Railway | - | |
| Calumet, Hammond and Southeastern Railroad | 1906 | 1919 | Chicago Short Line Railway | - | ||
| Calumet River Railway | PRR | 1883 | 1901 | South Chicago and Southern Railroad | - | |
| Calumet and Southeastern Railroad | 1902 | 1909 | Chicago, West Pullman and Southern Railroad | - | ||
| Calumet Western Railway | NYC/ PRR/ RI | 1897 | Still exists as a nonoperating subsidiary of Chicago Rail Link | |||
| Camanche, Albany and Mendota Railroad | CB&Q | 1856 | 1859 | Illinois Grand Trunk Railway | - | |
| Carbondale and Shawneetown Railroad | IC | 1869 | 1897 | St. Louis, Alton and Terre Haute Railroad | - | |
| Carthage and Burlington Railroad | CB&Q | 1867 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| Casey and Kansas Railroad | 1926 | 1937 | N/A | - | ||
| Central Illinois Railway | 1905 | 1906 | Chicago and Illinois Midland Railway | - | ||
| Central Illinois and Wisconsin Railway | MILW | 1880 | 1900 | Chicago, Milwaukee and St. Paul Railway | - | |
| Central Iowa Railway | MSTL | 1882 | 1886 | Iowa Central Railway | - | |
| Central Military Tract Railroad | CB&Q | 1851 | 1856 | Chicago, Burlington and Quincy Railroad | - | |
| Central Terminal Railway | CP | 1911 | 1987 | Soo Line Railroad | - | |
| Central Wisconsin Railroad | CWRC | 1982 | 1985 | Wisconsin and Calumet Railroad | - | |
| Centralia and Altamont Railroad | MP | 1889 | 1894 | Centralia and Chester Railroad | - | |
| Centralia and Chester Railroad | MP | 1883 | 1900 | Illinois Southern Railway | - | |
| Centralia and Sandoval Railroad | CB&Q | 1909 | 1917 | Chicago, Burlington and Quincy Railroad | - | |
| Champaign, Havana and Western Railway | IC | 1879 | 1880 | Wabash, St. Louis and Pacific Railway | - | |
| Champaign and Southeastern Railway | WAB | 1880 | 1903 | Wabash Railroad | - | |
| Charleston, Neoga and St. Louis Railroad | NKP | 1880 | 1881 | Toledo, Cincinnati and St. Louis Railroad | - | |
| Chesapeake and Ohio Railway | C&O, CO | C&O | 1921 | 1987 | CSX Transportation | - |
| Chesapeake and Ohio Railway of Indiana | C&O | 1910 | 1934 | Chesapeake and Ohio Railway | - | |
| Chester and Iron Mountain Railroad | MP | 1873 | Iron Mountain, Chester and Eastern Railroad | - | ||
| Chester and Kaskaskia Railroad | MP | 1877 | 1878 | Wabash, Chester and Western Railroad | - | |
| Chester and Mount Vernon Railroad | MP | 1927 | 1956 | Missouri Pacific Railroad | - | |
| Chester and Tamaroa Coal and Railroad Company | MP | 1869 | 1873 | Iron Mountain, Chester and Eastern Railroad | - | |
| Chicago and Alton Railroad | C&A | GM&O | 1861 | 1931 | Alton Railroad | - |
| Chicago and Alton Railway | GM&O | 1900 | 1906 | Chicago and Alton Railroad | - | |
| Chicago, Alton and St. Louis Railroad | GM&O | 1855 | 1856 | St. Louis, Alton and Chicago Railroad | - | |
| Chicago and Atlantic Railway | ERIE | 1873 | 1890 | Chicago and Erie Railroad | - | |
| Chicago and Atlantic Extension Railway | ERIE | 1873 | 1873 | Chicago and Atlantic Railway | - | |
| Chicago and Aurora Railroad | CB&Q | 1852 | 1855 | Chicago, Burlington and Quincy Railroad | - | |
| Chicago, Burlington and Northern Railroad | CB&Q | 1885 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| Chicago, Burlington and Quincy Railroad | CB&Q, CBQ | CB&Q | 1855 | 1970 | Burlington Northern Inc. | - |
| Chicago, Burlington and Quincy Railway | CB&Q | 1901 | 1907 | N/A | Operated the Chicago, Burlington and Quincy Railroad under lease, but did not own any railroad | |
| Chicago and Calumet River Railroad | 1901 | 1956 | N/A | - | ||
| Chicago and Calumet Terminal Railway | B&O | 1886 | 1898 | Chicago Terminal Transfer Railroad | - | |
| Chicago and Canada Southern Railway | 1871 | 1888 | N/A | Sold at foreclosure; no property in Illinois | ||
| Chicago and Carbondale Railroad | IC | 1895 | 1895 | Chicago and Texas Railroad | - | |
| Chicago Central Railway | B&O | 1889 | 1891 | Chicago and Northern Pacific Railroad | - | |
| Chicago, Cincinnati and Louisville Railroad | C&O | 1907 | 1910 | Chesapeake and Ohio Railway of Indiana | - | |
| Chicago, Danville and St. Louis Railroad | C&EI | 1887 | 1887 | Chicago and Eastern Illinois Railroad | - | |
| Chicago, Danville and Vincennes Railroad | C&EI | 1865 | 1877 | Chicago and Nashville Railroad | - | |
| Chicago and Eastern Illinois Railroad | C&EI, CEI | C&EI | 1940 | 1976 | Missouri Pacific Railroad | - |
| Chicago and Eastern Illinois Railroad | C&EI | 1877 | 1922 | Chicago and Eastern Illinois Railway | - | |
| Chicago and Eastern Illinois Railway | C&EI | C&EI | 1922 | 1940 | Chicago and Eastern Illinois Railroad | - |
| Chicago and Erie Railroad | ERIE | 1890 | 1941 | Erie Railroad | - | |
| Chicago and Evanston Railroad | MILW | 1861 | 1885 | Chicago, Evanston and Lake Superior Railway | - | |
| Chicago, Evanston and Lake Superior Railway | MILW | 1885 | 1900 | Chicago, Milwaukee and St. Paul Railway | - | |
| Chicago and Grand Trunk Railway | CN | 1880 | 1900 | Chicago Lake County Railway | - | |
| Chicago and Great Eastern Railway | PRR | 1863 | 1868 | Columbus, Chicago and Indiana Central Railway | - | |
| Chicago Great Western Railroad | CGW | CGW | 1909 | 1941 | Chicago Great Western Railway | - |
| Chicago and Great Western Railroad | B&O | 1873 | 1890 | Chicago and Northern Pacific Railroad | - | |
| Chicago Great Western Railway | CGW | CGW | 1941 | 1968 | Chicago and North Western Railway | - |
| Chicago Great Western Railway | CGW | 1892 | 1909 | Chicago Great Western Railroad | - | |
| Chicago, Hammond and Western Railroad | NYC | 1896 | 1898 | Chicago Junction Railway | - | |
| Chicago, Harlem and Batavia Railway | B&O | 1885 | 1890 | Chicago and Northern Pacific Railroad | - | |
| Chicago, Havana and Western Railroad | IC | 1886 | 1902 | Illinois Central Railroad | - | |
| Chicago Heights and Northern Railway | EJ&E | 1897 | Elgin, Joliet and Eastern Railway | - | ||
| Chicago Heights Terminal Transfer Railroad | CHTT | C&EI | 1898 | Still exists as a subsidiary of the Union Pacific Railroad | ||
| Chicago and Illinois Midland Railway | C&IM, CIM | 1906 | 1996 | Illinois and Midland Railroad | - | |
| Chicago and Illinois River Railroad | GM&O | 1867 | 1879 | Chicago and Alton Railroad | - | |
| Chicago and Illinois Southern Railroad | IC | 1877 | - | |||
| Chicago and Illinois Southern Railroad | IC | 1871 | 1872 | Chicago and Illinois Southern Railway | - | |
| Chicago and Illinois Southern Railway | IC | 1872 | 1876 | Decatur, Sullivan and Mattoon Railroad, Grayville and Mattoon Railroad | - | |
| Chicago and Illinois Western Railroad | C&IW, CIW | IC | 1903 | Illinois Central Railroad | - | |
| Chicago and Indiana Railroad | CINR | 1979 | 1979 | N/A | - | |
| Chicago, Indiana and Southern Railroad | NYC | 1906 | 1914 | New York Central Railroad | - | |
| Chicago and Indiana State Line Railway | NYC | 1880 | 1898 | Chicago Junction Railway | - | |
| Chicago, Indianapolis and Louisville Railway | CI&L, CIL | MON | 1897 | 1956 | Monon Railroad | - |
| Chicago, Indianapolis and St. Louis Short Line Railway | NYC | 1903 | 1913 | Cleveland, Cincinnati, Chicago and St. Louis Railway | - | |
| Chicago and Iowa Railroad | CB&Q | 1869 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| Chicago Junction Railway | NYC | 1898 | 1958 | Chicago River and Indiana Railroad | - | |
| Chicago and Kenosha Railway | EJ&E | 1889 | 1913 | Illinois Steel Company | - | |
| Chicago Lake County Railway | CN | 1900 | 1900 | Grand Trunk Western Railway | - | |
| Chicago and Lake Huron Railroad | CN | 1873 | 1879 | North Western Grand Trunk Railway | - | |
| Chicago, Lake Shore and Eastern Railway | EJ&E | 1897 | 1938 | Elgin, Joliet and Eastern Railway | - | |
| Chicago and Lake Superior Railroad | MILW | 1883 | 1885 | Chicago, Evanston and Lake Superior Railway | - | |
| Chicago, Madison and Northern Railroad | 1980 | 1982 | Central Wisconsin Railroad | - | ||
| Chicago, Madison and Northern Railroad | IC | 1886 | 1903 | Illinois Central Railroad | - | |
| Chicago, Millington and Western Railway | 1872 | N/A | - | |||
| Chicago and Milwaukee Railroad | CNW | 1853 | 1863 | Chicago and Milwaukee Railway | - | |
| Chicago and Milwaukee Railway | CNW | 1863 | 1881 | Chicago, Milwaukee and North Western Railway | - | |
| Chicago, Milwaukee and Gary Railway | CM&G | MILW | 1908 | 1930 | Chicago, Milwaukee, St. Paul and Pacific Railroad | - |
| Chicago, Milwaukee and North Western Railway | CNW | 1881 | 1883 | Chicago and North Western Railway | - | |
| Chicago, Milwaukee and St. Paul Railway | MILW | 1872 | 1928 | Chicago, Milwaukee, St. Paul and Pacific Railroad | - | |
| Chicago, Milwaukee, St. Paul and Pacific Railroad | MILW | MILW | 1928 | 1985 | The Milwaukee Road, Inc. | - |
| Chicago and Mississippi Railroad | GM&O | 1852 | 1855 | Chicago, Alton and St. Louis Railroad | - | |
| Chicago, Missouri and Western Railway | CMNW | 1987 | 1990 | Gateway Western Railway, SPCSL Corporation | - | |
| Chicago and Nashville Railroad | C&EI | 1877 | 1877 | Chicago and Eastern Illinois Railroad | - | |
| Chicago and North Western Railway | CNW | CNW | 1859 | 1972 | Chicago and North Western Transportation Company | - |
| Chicago and North Western Transportation Company | CNW | CNW | 1972 | 1995 | Union Pacific Railroad | - |
| Chicago and North Wisconsin Railway | CB&Q | 1883 | 1887 | Chicago, Burlington and Northern Railroad | - | |
| Chicago Northern Railway | CNW | 1902 | 1903 | Chicago and North Western Railway | - | |
| Chicago and Northern Pacific Railroad | B&O | 1889 | 1896 | Chicago Terminal Transfer Railroad | - | |
| Chicago and Ohio River Railroad | B&O | 1873 | 1893 | Peoria, Decatur and Evansville Railway | - | |
| Chicago and Pacific Railroad | MILW | 1872 | 1900 | Chicago, Milwaukee and St. Paul Railway | - | |
| Chicago and Paducah Railroad | WAB | 1872 | 1880 | Wabash, St. Louis and Pacific Railway | - | |
| Chicago, Paducah and Memphis Railroad | C&EI | 1893 | 1897 | Chicago and Eastern Illinois Railroad | - | |
| Chicago, Palatine and Wauconda Railroad | 1921 | 1924 | N/A | - | ||
| Chicago, Pekin and Southwestern Railroad | ATSF | 1869 | 1881 | Chicago, St. Louis and Western Railroad | - | |
| Chicago, Peoria and St. Louis Railroad | 1909 | 1924 | Alton and Eastern Railroad, Chicago, Springfield and St. Louis Railway, Jacksonville and Havana Railroad, Springfield, Havana and Peoria Railroad | - | ||
| Chicago, Peoria and St. Louis Railway | 1888 | 1896 | Chicago, Peoria and St. Louis Railroad of Illinois | - | ||
| Chicago, Peoria and St. Louis Railroad of Illinois | 1896 | 1900 | Chicago, Peoria and St. Louis Railway of Illinois | - | ||
| Chicago, Peoria and St. Louis Railway of Illinois | 1900 | 1912 | Chicago, Peoria and St. Louis Railroad | - | ||
| Chicago, Peoria and Western Railway | 1898 | Still exists as a lessor of the Belt Railway of Chicago | ||||
| Chicago and Plainfield Railroad | ATSF | 1859 | 1869 | Chicago, Plainfield and Pekin Railroad | - | |
| Chicago, Plainfield and Pekin Railroad | ATSF | 1869 | 1869 | Chicago, Pekin and Southwestern Railroad | - | |
| Chicago Produce Terminal Company | CPTC | 1929 | 1977 | N/A | - | |
| Chicago River and Indiana Railroad | CRI | NYC | 1904 | 1976 | Consolidated Rail Corporation | - |
| Chicago and Rock Island Railroad | RI | 1851 | 1866 | Chicago, Rock Island and Pacific Railroad | - | |
| Chicago, Rock Island and Pacific Railroad | RI, ROCK | RI | 1948 | 1980 | Baltimore and Ohio Railroad, Iowa Railroad, La Salle and Bureau County Railroad, Norfolk and Western Railway, Peoria and Pekin Union Railway | - |
| Chicago, Rock Island and Pacific Railroad | RI | 1866 | 1880 | Chicago, Rock Island and Pacific Railway | - | |
| Chicago, Rock Island and Pacific Railway | RI | RI | 1880 | 1948 | Chicago, Rock Island and Pacific Railroad | - |
| Chicago and Rock River Railroad | CB&Q | 1869 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| Chicago, Rockford and Northern Railroad | CB&Q | 1874 | 1892 | Chicago and Iowa Railroad | - | |
| Chicago and St. Louis Railway | ATSF | 1885 | 1886 | Chicago, Santa Fe and California Railway | - | |
| Chicago, St. Charles and Mississippi Air Line Railroad | CNW | 1853 | 1855 | Galena and Chicago Union Railroad | - | |
| Chicago, St. Louis and Ohio River Railroad | IC | 1900 | 1901 | St. Louis and Ohio River Railroad | - | |
| Chicago, St. Louis and Paducah Railway | IC | 1887 | 1897 | St. Louis, Alton and Terre Haute Railroad | - | |
| Chicago, St. Louis and Pittsburgh Railroad | PRR | 1883 | 1890 | Pittsburgh, Cincinnati, Chicago and St. Louis Railway | - | |
| Chicago, St. Louis and Western Railroad | ATSF | 1882 | 1885 | Chicago and St. Louis Railway | - | |
| Chicago, St. Paul and Fond du Lac Railroad | CNW | 1855 | 1859 | Chicago and North Western Railway | - | |
| Chicago and Santa Fe Railroad | 1889 | - | ||||
| Chicago, Santa Fe and California Railway | ATSF | 1886 | 1900 | Atchison, Topeka and Santa Fe Railway | - | |
| Chicago Short Line Railway | CSL | 1900 | 2002 | South Chicago and Indiana Harbor Railway | - | |
| Chicago South Branch Dock Company | B&O | 1859 | 1888 | Bridgeport and South Chicago Railroad | - | |
| Chicago South Shore and South Bend Railroad | CSS | 1925 | - | |||
| Chicago and Southern Railroad | CN | 1874 | 1878 | Chicago and State Line Railway | - | |
| Chicago and Southeastern Railway | EJ&E | 1889 | 1913 | Illinois Steel Company | - | |
| Chicago Southern Railway | MILW | 1904 | 1910 | Chicago, Terre Haute and Southeastern Railway of Illinois | - | |
| Chicago and Southwestern Railroad | B&O | 1890 | 1891 | Chicago and Northern Pacific Railroad | - | |
| Chicago and Springfield Railroad | IC | 1877 | 1902 | Illinois Central Railroad | - | |
| Chicago, Springfield and St. Louis Railroad | IC | 1883 | 1886 | Litchfield and St. Louis Railway | - | |
| Chicago, Springfield and St. Louis Railway | 1925 | 1942 | Springfield and Southwestern Railroad | - | ||
| Chicago and State Line Railroad | NKP | 1887 | 1923 | New York, Chicago and St. Louis Railroad | - | |
| Chicago and State Line Railway | CNW | 1905 | 1905 | Milwaukee and State Line Railway | - | |
| Chicago and State Line Railway | CN | 1878 | 1879 | North Western Grand Trunk Railway | - | |
| Chicago and Strawn Railway | WAB | 1879 | 1880 | Wabash, St. Louis and Pacific Railway | - | |
| Chicago Suburban Railway | MILW | 1882 | 1898 | Chicago, Evanston and Lake Superior Railway | - | |
| Chicago and Superior Railroad | MILW | 1873 | 1880 | Chicago, Milwaukee and St. Paul Railway | - | |
| Chicago Terminal Transfer Railroad | B&O | 1897 | 1910 | Baltimore and Ohio Chicago Terminal Railroad | - | |
| Chicago, Terre Haute and Southeastern Railway | CTSE | MILW | 1910 | 1948 | Chicago, Milwaukee, St. Paul and Pacific Railroad | - |
| Chicago, Terre Haute and Southeastern Railway of Illinois | MILW | 1910 | 1910 | Chicago, Terre Haute and Southeastern Railway | - | |
| Chicago and Texas Railroad | IC | 1893 | 1902 | Illinois Central Railroad | - | |
| Chicago and Tomah Railroad | CNW | 1880 | 1880 | Milwaukee and Madison Railway | - | |
| Chicago Union Station Company | CUST | CB&Q/ MILW/ PRR | 1915 | Still exists as a subsidiary of the National Railroad Passenger Corporation | ||
| Chicago Union Transfer Railway | C&EI/ CN/ ERIE/ MON/ WAB | 1888 | 1912 | Chicago and Western Indiana Railroad | - | |
| Chicago, West Pullman and Southern Railroad | CWP | 1909 | 1996 | Chicago Rail Link | - | |
| Chicago, West Pullman and Southern Railway | 1900 | 1909 | Chicago, West Pullman and Southern Railroad | - | ||
| Chicago and West Ridge Railroad | 1893 | |||||
| Chicago and Western Dummy Railway | B&O | 1879 | 1885 | Chicago, Harlem and Batavia Railway | - | |
| Chicago and Western Indiana Railroad | C&WI, CWI | C&EI/ CN/ ERIE/ MON/ WAB | 1879 | Still exists as a nonoperating subsidiary of the Union Pacific Railroad | ||
| Chicago and Western Indiana Belt Railway | C&EI/ CN/ ERIE/ MON/ WAB | 1881 | 1882 | Chicago and Western Indiana Railroad | - | |
| Chicago and Wisconsin Railroad | CP | 1884 | 1899 | Wisconsin Central Railway | - | |
| Chicago, Zeigler and Gulf Railway | 1902 | - | ||||
| Christopher and Herrin Railroad | IC | 1903 | 1903 | Illinois Central Railroad | - | |
| Cincinnati, Hamilton and Dayton Railway | B&O | 1905 | 1915 | N/A | Leased the Cincinnati, Indianapolis and Western Railway | |
| Cincinnati, Indianapolis, St. Louis and Chicago Railway | NYC | 1880 | 1889 | Cleveland, Cincinnati, Chicago and St. Louis Railway | - | |
| Cincinnati, Indianapolis and Western Railroad | CIWN | B&O | 1915 | 1990 | CSX Transportation | - |
| Cincinnati, Indianapolis and Western Railway | B&O | 1902 | 1915 | Cincinnati, Indianapolis and Western Railroad, Sidell and Olney Railroad | - | |
| Cincinnati, Lafayette and Chicago Railroad | NYC | 1871 | 1938 | Cleveland, Cincinnati, Chicago and St. Louis Railway | - | |
| Cincinnati, Louisville and Vincennes Railway | B&O | 1899 | 1899 | Baltimore and Ohio Southwestern Railroad | - | |
| Cleveland, Cincinnati, Chicago and St. Louis Railway | NYC | 1889 | 1976 | Consolidated Rail Corporation | - | |
| Clinton, Bloomington and North Eastern Railway | IC | 1878 | 1880 | Kankakee and South Western Railroad | - | |
| Coal Belt Railway | MP | 1903 | 1909 | St. Louis, Iron Mountain and Southern Railway | - | |
| Collinsville and Troy Railroad | ITC | 1899 | 1902 | St. Louis, Troy and Eastern Railroad | - | |
| Columbus, Chicago and Indiana Central Railway | PRR | 1868 | 1883 | Chicago, St. Louis and Pittsburgh Railroad | - | |
| Consolidated Rail Corporation | CR | 1976 | 1999 | CSX Transportation, Norfolk Southern Railway | - | |
| Cook, Lake and McHenry Counties Railway | MILW | 1899 | 1901 | Chicago, Milwaukee and St. Paul Railway | - | |
| Danville and Grape Creek Railroad | C&EI | 1880 | 1881 | Chicago and Eastern Illinois Railroad | - | |
| Danville and Indiana Harbor Railroad | NYC | 1905 | 1906 | Chicago, Indiana and Southern Railroad | - | |
| Danville, Olney and Ohio River Railroad | B&O, IC | 1869 | 1886 | Chicago and Ohio River Railroad | - | |
| Danville and Pekin Railway | NYC | 1878 | 1879 | Indiana, Bloomington and Western Railway | - | |
| Danville and Rosedale Railway | C&EI | 1870 | 1872 | Evansville, Terre Haute and Chicago Railway | - | |
| Danville and Southwestern Railroad | NYC | 1879 | 1881 | Wabash, St. Louis and Pacific Railway | - | |
| Danville, Tuscola and Western Railroad | C&EI | 1887 | 1887 | Chicago, Danville and St. Louis Railroad | - | |
| Danville, Urbana, Bloomington and Pekin Railroad | NYC | 1867 | 1869 | Indianapolis, Bloomington and Western Railway | - | |
| Davenport and Rock Island Railway Bridge Company | CB&Q/ MILW | 1884 | 1895 | Davenport and Rock Island Bridge, Railway and Terminal Company | - | |
| Davenport and Rock Island Bridge, Railway and Terminal Company | CB&Q/ MILW | 1895 | 1898 | Davenport, Rock Island and North Western Railway | - | |
| Davenport, Rock Island and North Western Railway | DRI | CB&Q/ MILW | 1898 | 1995 | Burlington Northern Railroad, Soo Line Railroad | - |
| Davenport, Rock Island and Northwestern Railway | CB&Q/ MILW | 1900 | 1901 | Davenport, Rock Island and North Western Railway | - | |
| Decatur and East St. Louis Railroad | WAB | 1867 | 1870 | Toledo, Wabash and Western Railway | - | |
| Decatur and Eastern Railway | B&O | 1894 | 1895 | Indiana, Decatur and Western Railway | - | |
| Decatur and Indianapolis Railroad | B&O | 1853 | 1855 | Indiana and Illinois Central Railway | - | |
| Decatur, Mattoon and Southern Railroad | IC | 1878 | 1879 | Peoria, Decatur and Evansville Railway | - | |
| Decatur, Sullivan and Mattoon Railroad | IC | 1876 | 1877 | Decatur, Mattoon and Southern Railroad | - | |
| Decatur, Sullivan and Mattoon Railroad | IC | 1869 | 1872 | Chicago and Illinois Southern Railway | - | |
| De Kalb and Great Western Railway | CGW | 1895 | 1911 | Chicago Great Western Railroad | - | |
| Denverside Connecting Railway | MP/ SSW | 1910 | 1913 | Alton and Southern Railroad | - | |
| De Pue, Ladd and Eastern Railroad | CNW | 1888 | 1920 | Chicago and North Western Railway | - | |
| Depue and Northern Railroad | 1904 | - | ||||
| Des Plaines Valley Railway | CNW | 1909 | 1913 | Chicago and North Western Railway | - | |
| Dixon, Peoria and Hannibal Railroad | CB&Q | 1867 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| Dixon and Quincy Railroad | CB&Q | 1869 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| Dixon, Rock Falls and Southwestern Electric Railway | 1903 | 1913 | Hooppole, Yorktown and Tampico Railroad | Operated by steam | ||
| Dixon, Rockford and Kenosha Railway | CNW | 1864 | 1864 | Chicago and North Western Railway | - | |
| Dixon, Rockford and State Line Railroad | CNW | 1864 | 1864 | Dixon, Rockford and Kenosha Railway | - | |
| Dunleith and Dubuque Bridge Company | IC | 1857 | 1946 | Illinois Central Railroad | - | |
| East St. Louis Belt Railroad | 1898 | Terminal Railroad Association of St. Louis | - | |||
| East St. Louis and Carondelet Railway | 1873 | Terminal Railroad Association of St. Louis | - | |||
| East St. Louis Connecting Railway | 1878 | Terminal Railroad Association of St. Louis | - | |||
| East St. Louis Junction Railroad | ESLJ | CNW | 1918 | Still exists as a lessor of the Union Pacific Railroad | ||
| East St. Louis, Madison and Granite City Railroad | SOU | 1900 | 1904 | Southern Railway | - | |
| East and West Illinois Railway | MP | 1902 | 1902 | St. Louis Valley Railway | - | |
| Eastern Illinois and Missouri Railroad | C&EI | 1899 | 1899 | Chicago and Eastern Illinois Railroad | - | |
| Eastern Illinois and St. Louis Railroad | C&EI | 1903 | 1905 | Chicago and Eastern Illinois Railroad | - | |
| Eldorado, Marion and Southwestern Railroad | MP | 1906 | 1913 | Marion and Eastern Railroad | - | |
| Electric City and Illinois Railway | 1889 | 1891 | Madison, Illinois and St. Louis Railway | - | ||
| Elgin and State Line Railroad | CNW | 1859 | 1883 | Chicago and North Western Railway | - | |
| Englewood Connecting Railway | PRR | 1885 | 1954 | Penndel Company | - | |
| Erie Railroad | ERIE | ERIE | 1941 | 1960 | Erie–Lackawanna Railroad | - |
| Erie–Lackawanna Railroad | EL | 1960 | 1968 | Erie Lackawanna Railway | - | |
| Erie Lackawanna Railway | EL | 1968 | 1976 | Consolidated Rail Corporation | - | |
| Erie Western Railway | ERES | 1977 | 1979 | Chicago and Indiana Railroad | - | |
| Evansville, Mount Carmel and Northern Railway | NYC | 1906 | 1938 | Cleveland, Cincinnati, Chicago and St. Louis Railway | - | |
| Evansville and Southern Illinois Railway | L&N | 1869 | 1871 | St. Louis and Southeastern Railroad | - | |
| Evansville, Terre Haute and Chicago Railway | C&EI | 1872 | 1899 | Chicago and Eastern Illinois Railroad | - | |
| Fairbury, Pontiac and Northwestern Railway | WAB | 1867 | 1872 | Chicago and Paducah Railroad | - | |
| Fenton and Thomson Railroad | CB&Q | 1903 | 1906 | Chicago, Burlington and Quincy Railroad | - | |
| Fond du Lac, Amboy and Peoria Railway | MILW | 1874 | 1883 | Chicago, Milwaukee and St. Paul Railway | - | |
| Fort Wayne and Chicago Railroad | PRR | 1853 | 1856 | Pittsburgh, Fort Wayne and Chicago Railroad | - | |
| Fox River Valley Railroad | CNW | 1852 | 1858 | Elgin and State Line Railroad | - | |
| Franklin and Waverly Railway | CB&Q | 1908 | 1917 | Chicago, Burlington and Quincy Railroad | - | |
| Fredonia and Reeds Railroad | IC | 1914 | 1946 | Illinois Central Railroad | - | |
| Freeport, Dodgeville and Northern Railroad | IC | 1887 | 1888 | Chicago, Madison and Northern Railroad | - | |
| Fulton County Extension Railway | CB&Q | 1881 | 1908 | Fulton County Narrow Gauge Railway | - | |
| Fulton County Narrow Gauge Railway | CB&Q | 1878 | 1908 | Chicago, Burlington and Quincy Railroad | - | |
| Galena and Chicago Union Railroad | CNW | 1836 | 1864 | Chicago and North Western Railway | - | |
| Galena and Illinois River Railroad | PRR | 1857 | 1863 | Chicago and Great Eastern Railway | - | |
| Galena and Southern Wisconsin Railroad | CNW | 1853 | 1879 | Galena and Wisconsin Railroad | - | |
| Galena and Wisconsin Railroad | CNW | 1879 | 1880 | Chicago and Tomah Railroad | - | |
| Galesburg, Etherly and Eastern Railroad | 1894 | 1898 | Galesburg and Great Eastern Railroad | - | ||
| Galesburg and Great Eastern Railroad | 1898 | 1960 | N/A | - | ||
| Galesburg and Rio Railroad | CB&Q | 1886 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| Galesburg, Rockford and Northern Railroad | 1917 | 1922 | Hooppole, Yorktown and Tampico Railroad | - | ||
| Gardner, Coal City and Northern Railway | EJ&E | 1891 | Elgin, Joliet and Eastern Railway | - | ||
| Gateway Western Railway | GWWR | 1990 | 2001 | Kansas City Southern Railway | - | |
| Gilman, Clinton and Springfield Railroad | IC | 1867 | 1877 | Chicago and Springfield Railroad | - | |
| Grand Tower and Cape Girardeau Railroad | IC | 1889 | 1893 | Chicago and Texas Railroad | - | |
| Grand Tower and Carbondale Railroad | IC | 1882 | 1893 | Chicago and Texas Railroad | - | |
| Grand Tower Mining, Manufacturing and Transportation Company | IC | 1869 | 1882 | Grand Tower and Carbondale Railroad | - | |
| Grand Trunk Junction Railway | CN | 1880 | 1901 | Grand Trunk Western Railway | - | |
| Grand Trunk Western Railway | CN | 1900 | 1928 | Grand Trunk Western Railroad | - | |
| Granite City and East St. Louis Terminal Railroad | 1906 | - | ||||
| Granite City and Madison Belt Line Railroad | 1892 | Terminal Railroad Association of St. Louis | - | |||
| Grayville and Mattoon Railroad | IC | 1876 | 1880 | Peoria, Decatur and Evansville Railway | - | |
| Grayville and Mattoon Railroad | IC | 1857 | 1871 | Chicago and Illinois Southern Railroad | - | |
| Great Western Railroad | WAB | 1853 | 1865 | Toledo, Wabash and Western Railway | - | |
| Groves and Sand Ridge Railroad | IC | 1902 | 1904 | Illinois Central Railroad | - | |
| Gulf, Mobile and Ohio Railroad | GM&O, GMO | GM&O | 1940 | 1972 | Illinois Central Gulf Railroad | - |
| Hamilton, Lacon and Eastern Railroad | GM&O | 1867 | 1870 | Chicago and Alton Railroad | - | |
| Hammond Belt Railway | C&O | 1906 | N/A | - | ||
| Hammond and Blue Island Railroad | NYC | 1893 | 1896 | Chicago, Hammond and Western Railroad | - | |
| Hancock County Bridge Company | 1865 | 1868 | Keokuk and Hamilton Bridge Company | - | ||
| Hannibal Bridge Company | WAB | 1869 | 1937 | Wabash – Hannibal Bridge Company | - | |
| Hannibal and Naples Railroad | WAB | 1863 | 1877 | Wabash Railway | - | |
| Hanover Railway | 1906 | 1934 | N/A | - | ||
| Havana, Rantoul and Eastern Railroad | IC | 1873 | 1887 | LeRoy and Eastern Railroad | - | |
| Herrin Railway | MP | 1903 | 1909 | St. Louis, Iron Mountain and Southern Railway | - | |
| Herrin and Johnson City Railway | MP | 1905 | 1909 | St. Louis, Iron Mountain and Southern Railway | - | |
| Herrin Northern Railroad | IC | 1915 | 1946 | Illinois Central Railroad | - | |
| Herrin and Southern Railroad | CB&Q | 1909 | 1914 | Chicago, Burlington and Quincy Railroad | - | |
| Hooppole, Yorktown and Tampico Railroad | HY&T | 1922 | 1953 | N/A | - | |
| Hooppole, Yorktown and Tampico Railroad | HY&T | 1913 | 1917 | Galesburg, Rockford and Northern Railroad | - | |
| I&M Rail Link | IMRL | 1997 | 2002 | Iowa, Chicago and Eastern Railroad | - | |
| Illinois Central Railroad | IC | IC | 1851 | 1972 | Illinois Central Gulf Railroad | - |
| Illinois Central Gulf Railroad | ICG | 1972 | 1988 | Illinois Central Railroad | - | |
| Illinois and Eastern Railroad | IC | 1899 | 1899 | Illinois and Indiana Railroad | - | |
| Illinois Farmers' Railroad | CB&Q | 1867 | 1872 | Jacksonville, North Western and South Eastern Railway | - | |
| Illinois Grand Trunk Railway | CB&Q | 1859 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| Illinois and Indiana Railroad | IC | 1899 | 1906 | Indianapolis Southern Railroad | - | |
| Illinois, Iowa and Minnesota Railway | MILW | 1902 | 1908 | Chicago, Milwaukee and Gary Railway | - | |
| Illinois Midland Railway | 1913 | N/A | - | |||
| Illinois Midland Railway | PRR | 1874 | 1886 | Terre Haute and Peoria Railroad | - | |
| Illinois and Mississippi Valley Terminal Railroad | ITC | 1899 | 1899 | Illinois Terminal Railroad | - | |
| Illinois–Missouri Terminal Railway | ITC | ITC | 1954 | 1956 | Illinois Terminal Railroad | - |
| Illinois Northern Railway | IN | ATSF | 1901 | 1975 | Atchison, Topeka and Santa Fe Railway | - |
| Illinois Parallel Railroad | CNW | 1851 | 1853 | Chicago and Milwaukee Railroad | - | |
| Illinois RailNet | IR | 1997 | 2005 | Illinois Railway | - | |
| Illinois River Railroad | 1853 | 1864 | Peoria, Pekin and Jacksonville Railroad | - | ||
| Illinois and St. Louis Bridge Company | 1867 | 1878 | St. Louis Bridge Company | - | ||
| Illinois and St. Louis Railroad and Coal Company | SOU | 1865 | 1889 | Louisville, Evansville and St. Louis Consolidated Railroad | - | |
| Illinois South Eastern Railway | B&O | 1867 | 1870 | Springfield and Illinois South Eastern Railway | - | |
| Illinois Southern Railway | MP | 1900 | 1920 | Missouri–Illinois Railroad | - | |
| Illinois and Southern Iowa Railroad | WAB | 1857 | 1865 | Toledo, Wabash and Western Railway | - | |
| Illinois Terminal Company | ITC | 1922 | 1937 | Illinois Terminal Railroad | - | |
| Illinois Terminal Railroad | ITC | ITC | 1956 | 1981 | Norfolk and Western Railway | - |
| Illinois Terminal Railroad | ITC | ITC | 1937 | 1954 | Illinois–Missouri Terminal Railway | - |
| Illinois Terminal Railroad | ITC | 1895 | 1922 | Illinois Terminal Company | - | |
| Illinois Transfer Railroad | 1899 | Terminal Railroad Association of St. Louis | - | |||
| Illinois Valley Belt Railroad | 1902 | - | ||||
| Illinois Valley and Northern Railroad | CB&Q | 1887 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| Illinois and Wisconsin Railroad | CNW | 1851 | 1855 | Chicago, St. Paul and Fond du Lac Railroad | - | |
| Indiana, Bloomington and Western Railway | NYC | 1879 | 1887 | Pekin and Danville Railway | - | |
| Indiana, Decatur and Western Railway | B&O | 1895 | 1902 | Cincinnati, Indianapolis and Western Railway | - | |
| Indiana Harbor Railroad | NYC | 1907 | 1907 | Indiana Harbor Belt Railroad | - | |
| Indiana Hi-Rail Corporation | IHRC | 1986 | 1997 | N/A | - | |
| Indiana and Illinois Central Railway | B&O | 1855 | 1875 | Springfield, Decatur and Indianapolis Railway | - | |
| Indiana, Illinois and Iowa Railroad | NYC | 1881 | 1906 | Chicago, Indiana and Southern Railroad | - | |
| Indiana and Illinois Southern Railroad | IC | 1882 | 1890 | St. Louis, Indianapolis and Eastern Railroad | - | |
| Indiana and Western Railway | NYC | 1887 | 1887 | Ohio, Indiana and Western Railway | - | |
| Indianapolis, Bloomington and Western Railway | IC, NYC | 1869 | 1879 | Champaign, Havana and Western Railway, Danville and Pekin Railway | - | |
| Indianapolis, Crawfordsville and Danville Railroad | NYC | 1868 | 1869 | Indianapolis, Bloomington and Western Railway | - | |
| Indianapolis, Decatur and Springfield Railway | B&O | 1875 | 1887 | Indianapolis, Quincy and Missouri River Railway | - | |
| Indianapolis, Decatur and Western Railway | B&O | 1888 | 1894 | Decatur and Eastern Railway | - | |
| Indianapolis, Quincy and Missouri River Railway | B&O | 1887 | 1888 | Indianapolis, Decatur and Western Railway | - | |
| Indianapolis and St. Louis Railroad | NYC | 1869 | 1882 | Indianapolis and St. Louis Railway | - | |
| Indianapolis and St. Louis Railway | NYC | 1882 | 1889 | Cleveland, Cincinnati, Chicago and St. Louis Railway | - | |
| Indianapolis Southern Railroad | IC | 1906 | 1911 | Illinois Central Railroad | - | |
| Iowa Railroad | IRRC | 1981 | 1984 | Iowa Interstate Railroad | - | |
| Iowa Central Railway | MSTL | 1888 | 1912 | Minneapolis and St. Louis Railroad | - | |
| Iowa, Chicago and Eastern Railroad | ICE | 2002 | 2008 | Dakota, Minnesota and Eastern Railroad | - | |
| Iron Mountain, Chester and Eastern Railroad | MP | 1873 | 1878 | Wabash, Chester and Western Railroad | - | |
| Jacksonville, Alton and St. Louis Railroad | GM&O | 1857 | 1862 | St. Louis, Jacksonville and Chicago Railroad | - | |
| Jacksonville and Carrollton Railroad | GM&O | 1851 | 1857 | Jacksonville, Alton and St. Louis Railroad | - | |
| Jacksonville and Concord Railway | CB&Q | 1903 | 1904 | Jacksonville and St. Louis Railway | - | |
| Jacksonville and Havana Railroad | 1925 | 1938 | N/A | - | ||
| Jacksonville, Louisville and St. Louis Railway | CB&Q | 1890 | 1896 | Jacksonville and St. Louis Railway | - | |
| Jacksonville, North Western and South Eastern Railway | CB&Q | 1867 | 1879 | Jacksonville Southeastern Railway | - | |
| Jacksonville and St. Louis Railway | CB&Q | 1896 | 1905 | Chicago, Burlington and Quincy Railroad | - | |
| Jacksonville and Savanna Railroad | CB&Q | 1855 | 1861 | Chicago, Burlington and Quincy Railroad | - | |
| Jacksonville Southeastern Railway | CB&Q | 1879 | 1890 | Jacksonville, Louisville and St. Louis Railway | - | |
| Johnston City Connecting Railway | MP | 1911 | 1913 | St. Louis, Iron Mountain and Southern Railway | - | |
| Johnston City Southern Railroad | IC | 1914 | - | |||
| Joliet, Aurora and Northern Railway | EJ&E | 1884 | 1888 | Elgin, Joliet and Eastern Railway | - | |
| Joliet and Blue Island Railway | EJ&E | 1889 | 1938 | Elgin, Joliet and Eastern Railway | - | |
| Joliet and Chicago Railroad | GM&O | 1855 | 1950 | Gulf, Mobile and Ohio Railroad | - | |
| Joliet Junction Railroad | 1994 | 1999 | - | |||
| Joliet and Northern Indiana Railroad | NYC | 1854 | 1976 | Consolidated Rail Corporation | - | |
| Joliet, Rockford and Northern Railroad | CB&Q | 1881 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| Joliet and Terre Haute Railroad | CB&Q | 1852 | 1859 | Illinois Grand Trunk Railway | - | |
| Joliet Union Depot Company | ATSF/ GM&O/ RI | 1911 | - | |||
| Junction Railway | CNW | 1889 | 1891 | Chicago and North Western Railway | - | |
| Kankakee and Illinois River Railroad | NYC | 1869 | 1870 | Plymouth, Kankakee and Pacific Railroad | - | |
| Kankakee and Indiana Railroad | NYC | 1869 | 1873 | Cincinnati, Lafayette and Chicago Railroad | - | |
| Kankakee and Seneca Railroad | NYC/ RI | 1881 | 1933 | N/A | - | |
| Kankakee and South Western Railroad | IC | 1880 | 1902 | Illinois Central Railroad | - | |
| Kankakee and South-Western Coal Branch Railroad | IC | 1882 | 1883 | Kankakee and South Western Railroad | - | |
| Kankakee and Southwestern Railroad | IC | 1878 | 1880 | Kankakee and South Western Railroad | - | |
| Kankakee and Western Railroad | IC | 1879 | 1880 | Kankakee and South Western Railroad | - | |
| Kansas and Sidell Railroad | 1919 | 1938 | N/A | - | ||
| Keithsburg Bridge Company | MSTL | 1885 | 1901 | Iowa Central Railway | - | |
| Keithsburg and Eastern Railroad | MSTL | 1873 | 1880 | Peoria and Farmington Railway | - | |
| Kenosha and Rockford Railroad | CNW | 1856 | 1857 | Kenosha, Rockford and Rock Island Railroad | - | |
| Kenosha, Rockford and Rock Island Railroad | CNW | 1864 | 1864 | Dixon, Rockford and Kenosha Railway | - | |
| Kenosha and State Line Railroad | CNW | 1857 | 1864 | Kenosha, Rockford and Rock Island Railroad | - | |
| Kensington and Eastern Railroad | IC | 1904 | 1996 | Chicago South Shore and South Bend Railroad | - | |
| Keokuk and Hamilton Bridge Company | 1868 | - | ||||
| LaFayette, Bloomington and Mississippi Railroad | NKP | 1876 | 1879 | LaFayette, Bloomington and Muncie Railway | - | |
| LaFayette, Bloomington and Mississippi Railway | NKP | 1867 | 1876 | LaFayette, Bloomington and Mississippi Railroad | - | |
| LaFayette, Bloomington and Muncie Railway | NKP | 1879 | 1879 | Lake Erie and Western Railway | - | |
| LaFayette, Muncie and Bloomington Railroad | NKP | 1876 | 1879 | Muncie and State Line Railroad | - | |
| LaGrange Connecting Railroad | NYC | - | ||||
| La Salle and Bureau County Railroad | LSBC | 1890 | 1985 | Chicago Rail Link | - | |
| La Salle and Chicago Railroad | B&O | 1867 | 1873 | Chicago and Great Western Railroad | - | |
| Lake Erie and Mississippi Railway | NKP | 1884 | 1885 | Lake Erie and Western Railway | - | |
| Lake Erie and Western Railroad | NKP | 1887 | 1923 | New York, Chicago and St. Louis Railroad | - | |
| Lake Erie and Western Railway | NKP | 1879 | 1886 | Lake Erie and Western Railroad | - | |
| Lake Shore and Michigan Southern Railway | NYC | 1869 | 1914 | New York Central Railroad | - | |
| Lee County Railway | CNW | 1906 | 1910 | Chicago and North Western Railway | - | |
| LeRoy and Eastern Railroad | IC | 1886 | 1887 | Rantoul Railroad | - | |
| Le Roy Narrow Gauge Railroad | IC | 1876 | 1878 | Havana, Rantoul and Eastern Railroad | - | |
| Libertyville Railway | MILW | 1878 | 1881 | Chicago, Milwaukee and St. Paul Railway | - | |
| Litchfield, Carrollton and Western Railroad | GM&O | 1882 | 1892 | Litchfield, Carrollton and Western Railway | - | |
| Litchfield, Carrollton and Western Railway | GM&O | 1889 | 1899 | Quincy, Carrollton and St. Louis Railway | - | |
| Litchfield and Madison Railway | LM | CNW | 1900 | 1958 | Chicago and North Western Railway | - |
| Litchfield and St. Louis Railway | IC | 1886 | 1887 | St. Louis and Chicago Railway | - | |
| Logansport, Peoria and Burlington Railroad | TP&W | 1861 | 1864 | Toledo, Peoria and Warsaw Railway | - | |
| Louisiana and Pike County Railroad | WAB | 1867 | 1984 | N/A | - | |
| Louisville, Evansville and St. Louis Railroad | SOU | 1886 | 1889 | Louisville, Evansville and St. Louis Consolidated Railroad | - | |
| Louisville, Evansville and St. Louis Railway | SOU | 1882 | 1886 | Louisville, Evansville and St. Louis Railroad | - | |
| Louisville, Evansville and St. Louis Consolidated Railroad | SOU | 1889 | 1900 | Southern Railway of Illinois | - | |
| Louisville and Nashville Railroad | L&N, LN | L&N | 1880 | 1983 | Seaboard System Railroad | - |
| Louisville, New Albany and Chicago Railway | MON | 1884 | 1897 | Chicago, Indianapolis and Louisville Railway | - | |
| Louisville, New Albany and St. Louis Railway | SOU | 1878 | 1882 | Louisville, Evansville and St. Louis Railway | - | |
| Louisville, New Albany and St. Louis Air Line Railway | SOU | 1872 | 1877 | St. Louis and Mount Carmel Railway | - | |
| Louisville and St. Louis Railway | SOU | 1886 | 1897 | Louisville, Evansville and St. Louis Consolidated Railroad | - | |
| Lowell and Southern Railroad | CB&Q | 1925 | N/A | - | ||
| Lyons and Chicago Railroad | B&O | 1897 | - | |||
| Macomb, Industry and Littleton Railway | 1913 | 1930 | N/A | - | ||
| Macomb, Vermont and Bath Railroad | CB&Q | 1853 | 1854 | Peoria and Hannibal Railroad | - | |
| Macomb and Western Illinois Railway | 1901 | 1911 | Macomb, Industry and Littleton Railway | - | ||
| Macoupin County Railway | CNW | 1903 | 1912 | St. Louis, Peoria and North Western Railway | - | |
| Macoupin County Extension Railway | CNW | 1913 | 1920 | Chicago and North Western Railway | - | |
| Madison County Railroad | WAB | 1865 | 1871 | Wabash Railway | - | |
| Madison, Illinois and St. Louis Railway | 1891 | 1953 | St. Louis Merchants Bridge Terminal Railway | - | ||
| Marion and Eastern Railroad | MP | 1913 | 1956 | Missouri Pacific Railroad | - | |
| Marion and Harrisburg Railway | MP | 1905 | 1913 | St. Louis, Iron Mountain and Southern Railway | - | |
| Marion and Johnston City Railway | MP | 1905 | 1913 | St. Louis, Iron Mountain and Southern Railway | - | |
| Marquette, Spring Valley and Northwestern Railroad | 1901 | 1907 | Illinois Valley Railway | - | ||
| Mattoon and Evansville Railroad | IC | 1900 | 1902 | Illinois Central Railroad | - | |
| Mercer County Bridge Company | MSTL | 1881 | 1885 | Keithsburg Bridge Company | - | |
| Michigan Air Line Railroad | 1869 | 1871 | Chicago and Canada Southern Railway | - | ||
| Michigan Central Railroad | MC | NYC | 1852 | 1976 | Consolidated Rail Corporation | - |
| The Milwaukee Road, Inc. | MILW | MILW | 1985 | 1986 | Soo Line Railroad | - |
| Milwaukee and Madison Railway | CNW | 1880 | 1881 | Chicago, Milwaukee and North Western Railway | - | |
| Michigan Southern and Northern Indiana Railroad | NYC | 1855 | 1869 | Lake Shore and Michigan Southern Railway | - | |
| Milwaukee and State Line Railway | CNW | 1905 | 1909 | Chicago and North Western Railway | - | |
| Minneapolis and St. Louis Railroad | MSTL | 1912 | 1943 | Minneapolis and St. Louis Railway | - | |
| Minneapolis and St. Louis Railway | MSTL | MSTL | 1939 | 1960 | Chicago and North Western Railway | - |
| Minneapolis, St. Paul and Sault Ste. Marie Railroad | SOO | CP | 1944 | 1961 | Soo Line Railroad | - |
| Minneapolis, St. Paul and Sault Ste. Marie Railway | SOO | CP | 1909 | 1944 | Minneapolis, St. Paul and Sault Ste. Marie Railroad | - |
| Minnesota and Northwestern Railroad | CGW | 1886 | 1894 | Chicago Great Western Railway | - | |
| Mississippi Railroad | MILW | 1865 | 1865 | Northern Illinois Railroad | - | |
| Mississippi River Bridge Company | GM&O | 1873 | 1895 | Chicago and Alton Railroad | - | |
| Mississippi River Railroad and Toll Bridge Company | ATSF | 1886 | 1900 | Atchison, Topeka and Santa Fe Railway | - | |
| Mississippi and Rock River Junction Railroad | CNW | 1851 | 1855 | Galena and Chicago Union Railroad | - | |
| Mississippi and Wabash Railroad | TP&W | 1853 | 1865 | Toledo, Peoria and Warsaw Railway | - | |
| Missouri–Illinois Railroad | MI | MP | 1921 | 1978 | Missouri Pacific Railroad | - |
| Missouri and Illinois Bridge and Belt Railroad Company | CB&Q | 1904 | 1966 | Chicago, Burlington and Quincy Railroad | - | |
| Missouri Pacific Railroad | MP | MP | 1918 | 1997 | Union Pacific Railroad | - |
| Missouri Pacific Railroad in Illinois | MP | 1917 | 1918 | Missouri Pacific Railroad | - | |
| Missouri Pacific Railway | 1881 | 1890 | Terminal Railroad Association of St. Louis | - | ||
| Mobile and Ohio Railroad | GM&O | 1886 | 1940 | Gulf, Mobile and Ohio Railroad | - | |
| Moline and Peoria Railway | CB&Q/ MILW | 1900 | 1901 | Davenport, Rock Island and North Western Railway | - | |
| Moline and Southeastern Narrow Gauge Railway | 1878 | 1885 | N/A | - | ||
| Momence and State Line Railroad | C&EI | 1887 | 1888 | Chicago and Eastern Illinois Railroad | - | |
| Monon Railroad | MON | MON | 1956 | 1971 | Louisville and Nashville Railroad | - |
| Morris Terminal Railway | RI | 1905 | 1948 | Chicago, Rock Island and Pacific Railroad | - | |
| Mound City Railroad | IC | 1855 | 1885 | Mound City Railway | - | |
| Mound City Railway | IC | 1882 | 1902 | Illinois Central Railroad | - | |
| Mounds and Olive Branch Railroad | IC | 1902 | 1903 | Illinois Central Railroad | - | |
| Mount Carbon Coal Railroad | IC | 1861 | 1869 | Grand Tower Mining, Manufacturing and Transportation Company | - | |
| Mount Carmel and Alton Railroad | WAB | 1836 | 1865 | Madison County Railroad | - | |
| Mount Olive Coal Railroad | IC | 1888 | 1888 | St. Louis and Chicago Railroad | - | |
| Mount Vernon Railroad | L&N | 1855 | 1869 | St. Louis and Southeastern Railway | - | |
| Muncie and State Line Railroad | NKP | 1879 | 1879 | LaFayette, Bloomington and Muncie Railway | - | |
| Murphysboro and Shawneetown Railroad | IC | 1867 | 1869 | Carbondale and Shawneetown Railroad | - | |
| Nauvoo and Warsaw Railroad | MILW | 1847 | 1849 | Warsaw and Rockford Railroad | - | |
| New Castle and Danville Railroad | NYC | 1854 | 1869 | Indianapolis, Crawfordsville and Danville Railroad | - | |
| New York Central Railroad | NYC | NYC | 1914 | 1968 | Penn Central Transportation Company | - |
| New York and Chicago Railway | NKP | 1881 | 1881 | New York, Chicago and St. Louis Railway | - | |
| New York, Chicago and St. Louis Railroad | NKP | NKP | 1887 | 1964 | Norfolk and Western Railway | - |
| New York, Chicago and St. Louis Railway | NKP | 1881 | 1887 | Chicago and State Line Railroad | - | |
| Norfolk and Western Railway | N&W, NW | 1964 | 1998 | Norfolk Southern Railway | - | |
| North and South Railroad of Illinois | IC | 1890 | 1896 | St. Louis, Peoria and Northern Railway | - | |
| North Western Grand Trunk Railway | CN | 1879 | 1880 | Chicago and Grand Trunk Railway | - | |
| Northern Cross Railroad | CB&Q | 1849 | 1857 | Quincy and Chicago Railroad | - | |
| Northern Cross Railroad and Transportation Company | WAB | 1843 | 1847 | Sangamon and Morgan Railroad | - | |
| Northern Illinois Railroad | MILW | 1859 | 1866 | Western Union Railroad | - | |
| Northern Illinois Railway | CNW | 1884 | 1888 | Chicago and North Western Railway | - | |
| Northern Indiana Railroad | NYC | 1855 | 1855 | Michigan Southern and Northern Indiana Railroad | - | |
| Northern Indiana and Chicago Railroad | NYC | 1850 | 1855 | Northern Indiana Railroad | - | |
| Northern Pacific Railroad | NP | 1890 | 1893 | N/A | Leased the Wisconsin Central Company | |
| Northern and Southern Illinois Railroad | CB&Q | 1904 | 1908 | Chicago, Burlington and Quincy Railroad | - | |
| Ogle and Carroll County Railroad | CB&Q | 1857 | 1871 | Chicago and Iowa Railroad | - | |
| Oglesby and Granville Railway | MILW | 1905 | 1913 | Chicago, Milwaukee and St. Paul Railway | - | |
| Ohio, Indiana and Western Railway | NYC | 1887 | 1890 | Peoria and Eastern Railway | - | |
| Ohio and Mississippi Railroad | B&O | 1851 | 1862 | Ohio and Mississippi Railway | - | |
| Ohio and Mississippi Railway | B&O | 1861 | 1893 | Baltimore and Ohio Southwestern Railway | - | |
| Orion and Minersville Railroad | CB&Q | 1872 | 1875 | St. Louis, Rock Island and Chicago Railroad | - | |
| Ottawa, Oswego and Fox River Valley Railroad | CB&Q | 1852 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| Paducah and Illinois Railroad | PI | CB&Q/ IC/ L&N | 1910 | Still exists as a joint subsidiary of the BNSF Railway, Canadian National Railway, and CSX Transportation | ||
| Palatine, Lake Zurich and Wauconda Railroad | 1918 | 1921 | Chicago, Palatine and Wauconda Railroad | - | ||
| Pana, Springfield and North Western Railroad | B&O | 1865 | 1870 | Springfield and Illinois South Eastern Railway | - | |
| Paris and Danville Railroad | NYC | 1869 | 1881 | Danville and Southwestern Railroad | - | |
| Paris and Decatur Railroad | PRR | 1861 | 1874 | Peoria, Atlanta and Decatur Railroad | - | |
| Paris and Terre Haute Railroad | PRR | 1873 | 1874 | Peoria, Atlanta and Decatur Railroad | - | |
| Pawnee Railroad | 1888 | 1905 | Central Illinois Railway | - | ||
| Peabody Short Line Railroad | IC | 1958 | 1961 | Illinois Central Railroad | - | |
| Pekin and Danville Railway | NYC | 1887 | 1887 | Indiana and Western Railway | - | |
| Pekin, Lincoln and Decatur Railroad | IC | 1861 | 1876 | Pekin, Lincoln and Decatur Railway | - | |
| Pekin, Lincoln and Decatur Railway | IC | 1876 | 1879 | Peoria, Decatur and Evansville Railway | - | |
| Peninsular Railway | CN | 1869 | 1873 | Chicago and Lake Huron Railroad | - | |
| Penn Central Transportation Company | PC | 1968 | 1976 | Consolidated Rail Corporation | - | |
| Penndel Company | PRR | 1954 | 1976 | Consolidated Rail Corporation | - | |
| Pennsylvania Company | PRR | 1871 | 1918 | Pennsylvania Railroad | - | |
| Pennsylvania Railroad | PRR | PRR | 1918 | 1968 | Penn Central Transportation Company | - |
| Peoria, Atlanta and Decatur Railroad | PRR | 1869 | 1874 | Illinois Midland Railway | - | |
| Peoria and Bureau Valley Railroad | RI | 1853 | 1980 | Baltimore and Ohio Railroad | - | |
| Peoria and Burlington Railroad | CB&Q | 1863 | 1864 | Chicago, Burlington and Quincy Railroad | - | |
| Peoria, Decatur and Evansville Railway | B&O, IC | 1879 | 1900 | Illinois Central Railroad, Indiana, Decatur and Western Railway, Mattoon and Evansville Railroad, Peoria, Decatur and Mattoon Railroad | - | |
| Peoria, Decatur and Mattoon Railroad | IC | 1900 | 1905 | Illinois Central Railroad | - | |
| Peoria and Eastern Railway | PAE, PE | NYC | 1890 | 1976 | Consolidated Rail Corporation | - |
| Peoria and Farmington Railway | MSTL | 1869 | 1882 | Central Iowa Railway | - | |
| Peoria, Hanna City and Western Railway | RI | 1918 | 1951 | N/A | - | |
| Peoria and Hannibal Railroad | CB&Q | 1854 | 1868 | Chicago, Burlington and Quincy Railroad, Peoria, Pekin and Jacksonville Railroad | - | |
| Peoria and North-Western Railway | CNW | 1900 | 1901 | Chicago and North Western Railway | - | |
| Peoria and Oquawka Railroad | TP&W | 1849 | 1861 | Logansport, Peoria and Burlington Railroad | - | |
| Peoria, Pekin and Jacksonville Railroad | 1863 | 1881 | Wabash, St. Louis and Pacific Railway | - | ||
| Peoria and Pekin Terminal Railway | RI | 1899 | 1907 | Peoria Railway Terminal Company | - | |
| Peoria and Pekin Traction Company | RI | 1897 | 1899 | Peoria and Pekin Terminal Railway | - | |
| Peoria Railway Terminal Company | RI | 1906 | 1926 | Peoria Terminal Company | - | |
| Peoria and Rock Island Railway | RI | 1867 | 1877 | Rock Island and Peoria Railway | - | |
| Peoria and Springfield Railroad | CNW/ IC/ NKP/ NYC/ PRR | 1859 | 1882 | Peoria and Pekin Union Railway | - | |
| Peoria Terminal Company | PT, PTC | RI | 1926 | 1980 | - | |
| Peoria Terminal Railway | RI | 1885 | 1903 | Rock Island and Peoria Railway | - | |
| Pere Marquette Railroad | PM | 1903 | 1917 | Pere Marquette Railway | - | |
| Pere Marquette Railway | PM | PM | 1917 | 1947 | Chesapeake and Ohio Railway | - |
| Peru, La Salle and Deer Park Railroad | 1905 | 1934 | N/A | - | ||
| Petersburg and Springfield Railroad | GM&O | 1853 | 1854 | Sangamon and North West Railroad | - | |
| Philadelphia, Baltimore and Washington Railroad | PRR | 1956 | 1976 | Consolidated Rail Corporation | - | |
| Pike County Bridge Company | WAB | 1867 | 1869 | Hannibal Bridge Company | - | |
| Pike County Railroad | WAB | 1857 | 1865 | Hannibal and Naples Railroad | - | |
| Pittsburgh Railroad and Coal Company | SOU | 1859 | 1865 | Illinois and St. Louis Railroad and Coal Company | - | |
| Pittsburgh, Cincinnati, Chicago and St. Louis Railroad | PRR | 1917 | 1956 | Philadelphia, Baltimore and Washington Railroad | - | |
| Pittsburgh, Cincinnati, Chicago and St. Louis Railway | PRR | 1890 | 1917 | Pittsburgh, Cincinnati, Chicago and St. Louis Railroad | - | |
| Pittsburgh, Fort Wayne and Chicago Railroad | PRR | 1856 | 1861 | Pittsburgh, Fort Wayne and Chicago Railway | - | |
| Pittsburgh, Fort Wayne and Chicago Railway | PRR | 1861 | 1976 | Consolidated Rail Corporation | - | |
| Plymouth, Kankakee and Pacific Railroad | NYC | 1870 | 1881 | Indiana, Illinois and Iowa Railroad | - | |
| Polk and Forty-ninth Streets Junction Railway | CN | 1889 | 1889 | Grand Trunk Junction Railway | - | |
| Prairie Central Railway | PACY | 1981 | N/A | - | ||
| Prairie Trunk Railway | PARY | 1977 | 1984 | N/A | - | |
| Preemption Eastern Railroad | RI | 1893 | 1903 | Rock Island and Peoria Railway | - | |
| Pullman Railroad | PLM | RI | 1906 | 1980 | Norfolk and Western Railway | - |
| Quincy, Alton and St. Louis Railway | CB&Q | 1867 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| Quincy, Carrollton and St. Louis Railway | GM&O | 1899 | 1904 | Chicago and Alton Railroad | - | |
| Quincy and Chicago Railroad | CB&Q | 1857 | 1864 | Chicago, Burlington and Quincy Railroad | - | |
| Quincy, Missouri and Pacific Railroad | CB&Q | 1869 | 1886 | Quincy, Omaha and Kansas City Railway | - | |
| Quincy, Omaha and Kansas City Railroad | CB&Q | 1897 | 1939 | Chicago, Burlington and Quincy Railroad | - | |
| Quincy, Omaha and Kansas City Railway | CB&Q | 1887 | 1897 | Quincy, Omaha and Kansas City Railroad | - | |
| Quincy Railroad Bridge Company | CB&Q | 1867 | 1903 | Chicago, Burlington and Quincy Railroad | - | |
| Quincy and Toledo Railroad | WAB | 1857 | 1865 | Toledo, Wabash and Western Railway | - | |
| Quincy and Warsaw Railroad | CB&Q | 1865 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| Racine and Mississippi Railroad | MILW | 1855 | 1868 | Western Union Railroad | - | |
| Railroad Bridge Company | CB&Q | 1853 | 1867 | Quincy Railroad Bridge Company | - | |
| Randolph County Railroad | MP | 1894 | 1895 | Centralia and Chester Railroad | - | |
| Rantoul Railroad | IC | 1887 | 1903 | Illinois Central Railroad | - | |
| Riverside and Harlem Railroad | IC | 1901 | 1902 | Illinois Central Railroad | - | |
| Rochelle and Southern Railway | MILW | 1902 | 1913 | Chicago, Milwaukee and St. Paul Railway | - | |
| Rock Island and Alton Railroad | CB&Q | 1855 | 1859 | St. Louis, Alton and Rock Island Railroad | - | |
| Rock Island and Eastern Illinois Railway | CB&Q/ MILW | 1896 | 1900 | Davenport, Rock Island and Northwestern Railway | - | |
| Rock Island and La Salle Railroad | RI | 1847 | 1851 | Chicago and Rock Island Railroad | - | |
| Rock Island and Mercer County Railroad | RI | 1876 | 1903 | Rock Island and Peoria Railway | - | |
| Rock Island and Peoria Railroad | RI | 1855 | 1869 | Peoria and Rock Island Railway | - | |
| Rock Island and Peoria Railway | RI | 1877 | 1908 | Chicago, Rock Island and Pacific Railway | - | |
| Rockdale, Joliet and Lockport Terminal Railway | EJ&E | 1905 | Elgin, Joliet and Eastern Railway | - | ||
| Rockford Railroad | IC | 1906 | 1906 | Illinois Central Railroad | - | |
| Rockford Belt Railway | MILW | 1905 | 1908 | Chicago, Milwaukee and Gary Railway | - | |
| Rockford Central Railroad | MILW | 1869 | 1873 | Chicago and Superior Railroad | - | |
| Rockford Central Railroad | CNW | 1855 | 1856 | Kenosha and Rockford Railroad | - | |
| Rockford and Mississippi Railroad | CNW | 1857 | 1857 | Kenosha and State Line Railroad | - | |
| Rockford, Rock Island and St. Louis Railroad | CB&Q | 1876 | 1899 | St. Louis, Rock Island and Chicago Railroad | - | |
| Rockton and Freeport Railroad | MILW | 1853 | 1855 | Racine and Mississippi Railroad | - | |
| Rossville and Eastern Railroad | C&EI | 1902 | 1903 | Chicago and Eastern Illinois Railroad | - | |
| Rossville and Indiana Railroad | C&EI | 1872 | 1872 | Chicago, Danville and Vincennes Railroad | - | |
| Rutland, Toluca and Northern Railroad | GM&O | 1909 | 1938 | N/A | - | |
| St. Charles Railroad | CNW | 1859 | 1881 | Elgin and State Line Railroad | - | |
| St. Charles Branch Railroad | CNW | 1849 | 1853 | Chicago, St. Charles and Mississippi Air Line Railroad | - | |
| St. Clair Railroad | SOU | 1841 | 1853 | St. Clair Railroad and Coal Company | - | |
| St. Clair Railroad and Coal Company | SOU | 1853 | 1857 | Pittsburgh Railroad and Coal Company | - | |
| St. Clair Coal Railway | PRR | 1904 | 1908 | Vandalia Railroad | - | |
| St. Clair, Madison and St. Louis Belt Railroad | CB&Q | 1890 | 1904 | Missouri and Illinois Bridge and Belt Railroad Company | - | |
| St. Francisville and Lawrenceville Railroad | NYC | 1879 | 1881 | Wabash, St. Louis and Pacific Railway | - | |
| St. Louis, Alton and Chicago Railroad | GM&O | 1857 | 1862 | Chicago and Alton Railroad | - | |
| St. Louis, Alton and Rock Island Railroad | CB&Q | 1859 | 1868 | Rockford, Rock Island and St. Louis Railroad | - | |
| St. Louis, Alton and Springfield Railroad | 1887 | 1892 | St. Louis, Chicago and St. Paul Railroad | - | ||
| St. Louis, Alton and Terre Haute Railroad | IC, NYC | 1862 | 1904 | Illinois Central Railroad | - | |
| St. Louis and Belleville Electric Railway | IC | 1897 | 1958 | Peabody Short Line Railroad | Electric until 1949 | |
| St. Louis, Belleville and Southern Railway | IC | 1895 | 1946 | Illinois Central Railroad | - | |
| St. Louis Bridge Company | 1878 | Terminal Railroad Association of St. Louis | - | |||
| St. Louis and Cairo Railroad | GM&O | 1881 | 1913 | Mobile and Ohio Railroad | - | |
| St. Louis Central Railway | IC | 1881 | 1886 | St. Louis Southern Railroad | - | |
| St. Louis and Central Illinois Railroad | 1886 | 1888 | St. Louis, Alton and Springfield Railroad | - | ||
| St. Louis and Chicago Railroad | IC | 1888 | 1889 | St. Louis and Chicago Railway | - | |
| St. Louis and Chicago Railway | IC | 1885 | 1889 | North and South Railroad of Illinois | - | |
| St. Louis, Chicago and Peoria Railway | IC | 1886 | 1886 | St. Louis and Chicago Railway | - | |
| St. Louis, Chicago and St. Paul Railroad | 1892 | 1897 | St. Louis, Chicago and St. Paul Railway of Illinois | - | ||
| St. Louis, Chicago and St. Paul Railway of Illinois | 1897 | 1900 | Chicago, Peoria and St. Louis Railway of Illinois | - | ||
| St. Louis Coal Railroad | IC | 1881 | 1886 | St. Louis Southern Railroad | - | |
| St. Louis Connecting Railroad | PRR | 1925 | 1931 | Pittsburgh, Cincinnati, Chicago and St. Louis Railroad | - | |
| St. Louis and Eastern Railway | IC | 1889 | 1896 | St. Louis, Peoria and Northern Railway | - | |
| St. Louis and Illinois Belt Railway | ITC | 1905 | 1937 | Illinois Terminal Railroad | - | |
| St. Louis and Illinois Bridge Company | 1865 | 1868 | Illinois and St. Louis Bridge Company | - | ||
| St. Louis, Indianapolis and Eastern Railroad | IC | 1889 | 1899 | Illinois and Eastern Railroad | - | |
| St. Louis, Iron Mountain and Southern Railway | MP | 1901 | 1917 | Missouri Pacific Railroad in Illinois | - | |
| St. Louis, Jacksonville and Chicago Railroad | GM&O | 1862 | 1899 | Chicago and Alton Railroad | - | |
| St. Louis, Jerseyville and Springfield Railroad | 1880 | 1888 | St. Louis, Alton and Springfield Railroad | - | ||
| St. Louis Merchants Bridge Company | 1886 | 1920 | St. Louis Merchants Bridge Terminal Railway | - | ||
| St. Louis Merchants Bridge Terminal Railway | SLMB | 1887 | Terminal Railroad Association of St. Louis | - | ||
| St. Louis and Mount Carmel Railway | SOU | 1878 | 1878 | Louisville, New Albany and St. Louis Railway | - | |
| St. Louis, Mount Carmel and New Albany Railroad | SOU | 1869 | 1872 | Louisville, New Albany and St. Louis Air Line Railway | - | |
| St. Louis and O'Fallon Railway | SLOF | C&EI | 1896 | 1954 | Chicago and Eastern Illinois Railroad | - |
| St. Louis and Ohio River Railroad | MP/ SSW | 1920 | 1948 | Alton and Southern Railroad | - | |
| St. Louis and Ohio River Railroad | IC | 1901 | 1903 | Illinois Central Railroad | - | |
| St. Louis and Peoria Railroad | IC | 1889 | 1896 | St. Louis, Peoria and Northern Railway | - | |
| St. Louis, Peoria and North Western Railway | CNW | 1911 | 1913 | Chicago and North Western Railway | - | |
| St. Louis, Peoria and Northern Railway | GM&O, IC | 1898 | 1900 | Chicago and Alton Railway, Illinois Central Railroad | - | |
| St. Louis, Rock Island and Chicago Railroad | CB&Q | 1876 | 1899 | Chicago, Burlington and Quincy Railroad | - | |
| St. Louis and South Eastern Railway | L&N | 1872 | 1879 | South East and St. Louis Railway | - | |
| St. Louis and Southeastern Railroad | L&N | 1871 | 1871 | St. Louis and Southeastern Railway | - | |
| St. Louis and Southeastern Railway | L&N | 1871 | 1872 | St. Louis and South Eastern Railway | - | |
| St. Louis and Southeastern Railway | L&N | 1869 | 1871 | St. Louis and Southeastern Railroad | - | |
| St. Louis Southern Railroad | IC | 1886 | 1897 | St. Louis, Alton and Terre Haute Railroad | - | |
| St. Louis and Southern Illinois Railroad | MP | 1901 | 1902 | Illinois Southern Railway | - | |
| St. Louis Southwestern Railway | SSW | SSW | 1905 | 1997 | Union Pacific Railroad | - |
| St. Louis, Springfield and Vincennes Railway | B&O | 1899 | 1899 | Cincinnati, Louisville and Vincennes Railway | - | |
| St. Louis, Troy and Eastern Railroad | ITC | 1899 | 1937 | Illinois Terminal Railroad | - | |
| St. Louis Valley Railway | MP | 1901 | 1903 | St. Louis, Iron Mountain and Southern Railway | - | |
| St. Louis Valley Transfer Railway | MP | 1902 | 1903 | St. Louis Valley Railway | - | |
| St. Louis, Vandalia and Terre Haute Railroad | PRR | 1865 | 1905 | Vandalia Railroad | - | |
| Saline Valley Railway | NYC | 1907 | 1917 | Cleveland, Cincinnati, Chicago and St. Louis Railway | - | |
| Sangamon and Morgan Railroad | WAB | 1845 | 1853 | Great Western Railroad | - | |
| Sangamon and North West Railroad | GM&O | 1854 | 1859 | Alton and St. Louis Railroad | - | |
| Savanna Branch Railroad | MILW | 1851 | 1856 | Racine and Mississippi Railroad | - | |
| Seaboard System Railroad | SBD | 1983 | 1986 | CSX Transportation | - | |
| SF&L Railway | SFAL | 2001 | 2002 | Toledo, Peoria and Western Railway | - | |
| Shawneetown and Eldorado Railroad | L&N | 1861 | 1869 | St. Louis and Southeastern Railway | - | |
| Sidell and Olney Railroad | 1915 | 1919 | Kansas and Sidell Railroad, Westfield Railroad, Yale Short Line Railroad | - | ||
| South Chicago Railroad | IC | 1881 | 1987 | Northeast Illinois Regional Commuter Railroad Corporation | - | |
| South Chicago and Southern Railroad | PRR | 1881 | 1954 | Penndel Company | - | |
| South Chicago and Western Indiana Railroad | C&EI/ CN/ ERIE/ MON/ WAB | 1880 | 1882 | Chicago and Western Indiana Railroad | - | |
| South East and St. Louis Railway | L&N | 1880 | 1936 | Louisville and Nashville Railroad | - | |
| South Wilmington and Southern Railroad | 1907 | 1918 | Chicago, Wilmington and Franklin Coal Company | - | ||
| Southern Railway | SOU | SOU | 1900 | 1990 | Norfolk Southern Railway | - |
| Southern Railway of Illinois | SOU | 1900 | 1900 | Southern Railway | - | |
| Southern Illinois and Kentucky Railroad | IC | 1925 | 1954 | Illinois Central Railroad | - | |
| Southern Indiana Railway | MILW | 1908 | 1910 | Chicago, Terre Haute and Southeastern Railway | - | |
| Sparta and Ste. Genevieve Railroad | MP | 1889 | 1894 | Centralia and Chester Railroad | - | |
| SPCSL Corporation | SSWN | SSW | 1989 | 1997 | Union Pacific Railroad | - |
| Springfield and Decatur Railway | B&O | 1901 | 1901 | Indiana, Decatur and Western Railway | - | |
| Springfield, Decatur and Indianapolis Railway | B&O | 1875 | 1875 | Indianapolis, Decatur and Springfield Railway | - | |
| Springfield, Effingham and South Eastern Railroad | IC | 1869 | 1883 | Indiana and Illinois Southern Railroad | - | |
| Springfield, Havana and Peoria Railroad | 1926 | 1936 | Chicago and Illinois Midland Railway | - | ||
| Springfield and Illinois South Eastern Railway | B&O | 1870 | 1874 | Ohio and Mississippi Railway | - | |
| Springfield and Northwestern Railroad | 1869 | 1878 | Springfield and Northwestern Railway | - | ||
| Springfield and Northwestern Railway | 1878 | 1881 | Wabash, St. Louis and Pacific Railway | - | ||
| Springfield and Pekin Railroad | CNW/ IC/ NKP/ NYC/ PRR | 1853 | 1859 | Peoria and Springfield Railroad | - | |
| Springfield and Southwestern Railroad | 1942 | 1945 | N/A | - | ||
| Springfield Terminal Railway | SFT | 1908 | 1952 | N/A | - | |
| Strawn and Indiana State Line Railroad | C&EI | 1880 | 1887 | Chicago and Eastern Illinois Railroad | - | |
| Streator and Clinton Railroad | NYC | 1899 | 1900 | Indiana, Illinois and Iowa Railroad | - | |
| Sycamore and Cortland Railroad | CNW | 1859 | 1888 | Chicago and North Western Railway | - | |
| Tamaroa and Mount Vernon Railway | MP | 1891 | 1892 | Wabash, Chester and Western Railroad | - | |
| Terminal Railroad | NYC | 1896 | 1907 | Indiana Harbor Railroad | - | |
| Terminal Railroad of East St. Louis | 1880 | Terminal Railroad Association of St. Louis | - | |||
| Terre Haute and Alton Railroad | NYC | 1851 | 1856 | Terre Haute, Alton and St. Louis Railroad | - | |
| Terre Haute, Alton and St. Louis Railroad | NYC | 1856 | 1862 | St. Louis, Alton and Terre Haute Railroad | - | |
| Terre Haute and Indianapolis Railroad | PRR | 1892 | 1905 | Vandalia Railroad | - | |
| Terre Haute and Peoria Railroad | PRR | 1887 | 1957 | Penndel Company | - | |
| Thayer Junction Railway | 1909 | 1918 | Chicago, Wilmington and Franklin Coal Company | - | ||
| Toledo, Charleston and St. Louis Railroad | NKP | 1886 | 1886 | Toledo, St. Louis and Kansas City Railroad | - | |
| Toledo, Cincinnati and St. Louis Railroad | NKP | 1881 | 1884 | Toledo, Charleston and St. Louis Railroad | - | |
| Toledo and East St. Louis Railroad | NKP | 1900 | 1900 | Toledo, St. Louis and Western Railroad | - | |
| Toledo, Peoria and Warsaw Railway | TP&W | 1864 | 1880 | Toledo, Peoria and Western Railroad | - | |
| Toledo, Peoria and Western Railroad | TP&W, TPW | TP&W | 1927 | 1983 | Atchison, Topeka and Santa Fe Railway | - |
| Toledo, Peoria and Western Railroad | TP&W | 1879 | 1886 | Toledo, Peoria and Western Railway | - | |
| Toledo, Peoria and Western Railway | TP&W | TP&W | 1887 | 1927 | Toledo, Peoria and Western Railroad | - |
| Toledo, St. Louis and Kansas City Railroad | NKP | 1886 | 1900 | Toledo and East St. Louis Railroad | - | |
| Toledo, St. Louis and Western Railroad | NKP | 1900 | 1923 | New York, Chicago and St. Louis Railroad | - | |
| Toledo, Wabash and Western Railway | WAB | 1865 | 1876 | Wabash Railway | - | |
| Toluca and Eastern Railroad | GM&O | 1897 | 1902 | Toluca, Marquette and Northern Railroad | - | |
| Toluca, Marquette and Northern Railroad | GM&O | 1900 | 1909 | Rutland, Toluca and Northern Railroad | - | |
| Tonica and Petersburg Railroad | GM&O | 1857 | 1862 | St. Louis, Jacksonville and Chicago Railroad | - | |
| Tuscola, Charleston and Vincennes Railroad | NKP | 1867 | 1881 | Toledo, Cincinnati and St. Louis Railroad | - | |
| Union Railroad | NYC | 1852 | 1881 | Michigan Central Railroad | - | |
| Union Railway and Transit Company | 1874 | 1880 | Terminal Railroad of East St. Louis | - | ||
| Union Station Company | CB&Q/ MILW/ PRR | 1913 | 1915 | Chicago Union Station Company | - | |
| Union Stock Yard and Transit Company of Chicago | NYC | 1865 | 1958 | Chicago River and Indiana Railroad | - | |
| Vandalia Railroad | PRR | 1905 | 1917 | Pittsburgh, Cincinnati, Chicago and St. Louis Railroad | - | |
| Venice and Carondelet Railway | SOU | 1880 | 1889 | Louisville, Evansville and St. Louis Consolidated Railroad | - | |
| Vermilion and State Line Railroad | NKP | 1881 | 1881 | Toledo, Cincinnati and St. Louis Railroad | - | |
| Wabash Railroad | WAB | WAB | 1942 | 1991 | Norfolk and Western Railway | - |
| Wabash Railroad | WAB | 1889 | 1915 | Wabash Railway | - | |
| Wabash Railway | WAB | 1915 | 1942 | Wabash Railroad | - | |
| Wabash Railway | WAB | 1876 | 1879 | Wabash, St. Louis and Pacific Railway | - | |
| Wabash, Chester and Western Railroad | MP | 1878 | 1928 | Chester and Mount Vernon Railroad | - | |
| Wabash Eastern Railway of Illinois | WAB | 1889 | 1889 | Wabash Railroad | - | |
| Wabash – Hannibal Bridge Company | WAB | 1937 | 1943 | Wabash Railroad | - | |
| Wabash, St. Louis and Pacific Railway | WAB | 1879 | 1886 | Cairo, Vincennes and Chicago Railway, Chicago, Havana and Western Railroad, Chicago, Peoria and St. Louis Railway, Wabash Eastern Railway of Illinois | - | |
| Wabash Southern Railway | MP | 1905 | 1909 | St. Louis, Iron Mountain and Southern Railway | - | |
| Wabash Valley Railroad | WVRC | 1977 | 1981 | Prairie Central Railway | - | |
| Wabash Western Railway | WAB | 1887 | 1889 | Wabash Railroad | - | |
| Warsaw, Rock Island and Galena Railroad | MILW | 1863 | 1872 | Western Union Railroad | - | |
| Warsaw and Rockford Railroad | MILW | 1849 | 1863 | Warsaw, Rock Island and Galena Railroad | - | |
| Watertown Railroad | MILW | 1874 | 1876 | Western Union Railroad | - | |
| Waukegan and Mississippi Valley Railway | 1893 | 1919 | American Steel and Wire Company | - | ||
| Waukegan, Rockford and Elgin Traction Company | 1909 | 1918 | Palatine, Lake Zurich and Wauconda Railroad | Operated by steam | ||
| Waukegan and Southwestern Railway | EJ&E | 1891 | Elgin, Joliet and Eastern Railway | - | ||
| Western Air Line Railroad | CB&Q | 1853 | 1859 | American Central Railway | - | |
| Western Union Railroad | MILW | 1863 | 1900 | Chicago, Milwaukee and St. Paul Railway | - | |
| Westfield Railroad | WSD | 1919 | 1926 | Casey and Kansas Railroad | - | |
| Wisconsin and Calumet Railroad | WICT | 1985 | 1997 | Wisconsin and Southern Railroad | - | |
| Wisconsin Central Company | CP | 1887 | 1899 | Wisconsin Central Railway | - | |
| Wisconsin Central Railroad | CP | 1954 | 1961 | Soo Line Railroad | - | |
| Wisconsin Central Railway | CP | 1897 | 1954 | Wisconsin Central Railroad | - | |
| Wisconsin and Minnesota Railroad | CP | 1885 | 1888 | Wisconsin Central Company | - | |
| Yale Short Line Railroad | 1919 | 1933 | N/A | - |
Electric railways and predecessors
- Aurora, Elgin and Chicago Railroad
- Aurora, Elgin and Fox River Electric Company
- Alton, Jacksonville and Peoria Railway
- Bloomington, Pontiac and Joliet Electric Railway
- Cairo and St. Louis Railway
- Calumet and South Chicago Railway
- Central Illinois Public Service Company
- Centralia and Central City Traction Company
- Chicago, Aurora and DeKalb Railroad
- Chicago Aurora and Elgin Railroad
- Chicago City Railway
- Chicago and Desplaines Valley Electric Railway
- Chicago General Railway
- Chicago, Harvard and Geneva Lake Railway
- Chicago and Joliet Electric Railway
- Chicago, Lake Shore and South Bend Railway
- Chicago and Milwaukee Electric Railroad
- Chicago North Shore and Milwaukee Railroad
- Chicago, Ottawa and Peoria Railway
- Chicago South Shore and South Bend Railroad
- Chicago and South Side Rapid Transit Railroad
- Chicago and Southern Traction Company
- Chicago Surface Lines
- Chicago Tunnel Company
- Chicago, Wheaton and Western Railway
- Coal Belt Electric Railway
- DeKalb – Sycamore and Interurban Traction Company
- East St. Louis and Suburban Railway
- Elgin, Aurora and Southern Traction Company
- Elgin and Belvidere Electric Company
- Fruit Growers Refrigerating and Power Company
- Galesburg Railway and Light Company
- Galesburg and Kewanee Electric Railway
- Illinois Central Electric Railway
- Illinois Traction, Inc.
- Illinois Valley Railway
- Illinois Valley Traction Company
- Joliet and Southern Traction Company
- Kankakee and Western Electric Railway
- Keokuk and Western Illinois Electric Company
- Lake Street Elevated Railroad
- Lee County Central Electric Railway
- Macomb and Western Illinois Railway
- Metropolitan West Side Elevated Railroad
- Mississippi Valley Interurban Railway
- Moline, East Moline and Watertown Railway
- North Kankakee Electric Light and Railway Company
- Northern Illinois Electric Railway
- Northwestern Elevated Railroad
- Peoples Traction Company
- Peoria Railway
- Peoria and Pekin Terminal Railway
- Peoria and Pekin Traction Company
- Peoria Railway Terminal Company
- Rock Island Southern Railway
- Rockford, Beloit and Janesville Railroad
- Rockford and Belvidere Electric Railway
- Rockford and Interurban Railway
- St. Louis and Belleville Electric Railway
- South Side Elevated Railroad
- Southern Traction Company of Illinois
- Sterling, Dixon and Eastern Electric Railway
- Suburban Railroad
- Terre Haute, Indianapolis and Eastern Traction Company
- Tri-City Railway
- Union Consolidated Elevated Railway
- Woodstock and Sycamore Traction Company