The borough was named for Abraham Lincoln. Lincoln was incorporated on February 6, 1958, before which it was Lincoln Township. The change in governmental structure came after a portion of the borough attempted to secede from Lincoln Township to annex with Liberty Borough. Dead Man's Hollow is a 450 acre conservation area whose boundary lies within the borough.
Lincoln has three land borders, including Port Vue to the north, Elizabeth Township to the east and south, and Glassport to the northwest. Across the Monongahela River to the west, Lincoln runs adjacent with Clairton. Across the Youghiogheny River to the east, the borough runs adjacent with Versailles.
School tax millage rate- The South Allegheny SD in 2017 was 17.24. This ranked 41st highest in Allegheny County's 45 school districts, between McKeesport SD and Chartiers Valley SD.
Demographics
2000 census
As of the 2000 United States Census, there were 1,218 people, 482 households, and 359 families in the borough. The population density was 254/sqmi. There were 506 housing units at an average density of 105.5/sqmi. The racial makeup of the borough was 98.77% White, 0.66% African American, 0.08% Native American, 0.33% Asian, and 0.16% from two or more races. Hispanic or Latino of any race were 0.74% of the population. There were 484 households, out of which 24.8% had children under the age of 18 living with them, 62.4% were married couplesliving together, 8.9% had a female householder with no husband present, and 25.8% were non-families. 22.1% of all households were made up of individuals, and 9.3% had someone living alone who was 65 years of age or older. The average household size was 2.52 and the average family size was 2.94. The borough population contained 19.0% under the age of 18, 5.9% from 18 to 24, 27.2% from 25 to 44, 28.1% from 45 to 64, and 19.9% who were 65 years of age or older. The median age was 43 years. For every 100 females, there were 92.1 males. For every 100 females age 18 and over, there were 91.3 males. The median income for a household in the borough was $37,917, and the median income for a family was $43,333. Males had a median income of $35,852 versus $21,131 for females. The per capita income for the borough was $18,447. About 6.9% of families and 9.1% of the population were below the poverty line, including 8.4% of those under age 18 and 14.2% of those age 65 or over.