1858, January 22 – Mason County, named for Fort Mason, is established by an act of Texas state legislature. First post offices are established.
1860 Population of 630 includes 18 slaves.
1861,
1866–1868 Federal troops occupy Fort Mason, only to eventually abandon it.
1869 Courthouse and jail are erected.
1870 May 16 – Herman Lehmann and brother Willie are captured by Apaches, but Willie escapes within days.
1870–1898 The county had four women homesteaders: Louisa J. Hendryx, Mahala Hunnicutt, Sarah E. Morris and Priscilla Sparks
1875–1877
1878, May 12 – Herman Lehmann, escorted by soldiers, finally returns to his family.
1880s Manganese is discovered. Wakefield Company opens Spiller mines. Iron ore is discovered. Prospecting begins for gold, silver and coal.
1882–83 Hereford cattle are introduced into the county. Provisions made for county wide road work.
1887 The county petitions for state aid for needy residents.
1890s County places a bounty on wolves, wildcats and mountain lions.
1902 Mason installs its first telephone in the county judge's office.
1918 October 3 – Eighteen months after United States Congress declares war onGermany, the Mason County Council of Defense draws up resolution to abandon the use of the German language in the county. The majority of County residents are of German heritage.
1919 First oil and gas lease in the county. Construction begins on the Mason County section of the Puget Sound-to-the-Gulf Highway.
At the 2000 census, there were 3,738 people, 1,607 households and 1,110 families residing in the county. The population density was 4 per square mile. There were 2,372 housing units at an average density of 2 per square mile. The racial makeup of the county was 91.60% White, 0.13% Black or African American, 0.62% Native American, 0.05% Asian, 0.03% Pacific Islander, 5.75% from other races, and 1.82% from two or more races. 20.95% of the population were Hispanic or Latino of any race. There were 1,607 households of which 25.90% had children under the age of 18 living with them, 59.10% were married couplesliving together, 7.70% had a female householder with no husband present, and 30.90% were non-families. 29.20% of all households were made up of individuals and 17.90% had someone living alone who was 65 years of age or older. The average household size was 2.31 and the average family size was 2.83. 22.40% of the population were under the age of 18, 4.70% from 18 to 24, 20.70% from 25 to 44, 28.80% from 45 to 64, and 23.50% who were 65 years of age or older. The median age was 47 years. For every 100 females there were 92.40 males. For every 100 females age 18 and over, there were 87.60 males. The median household income was $30,921 and the median family income was $39,360. Males had a median income of $28,125 compared with $20,000 for females. The per capita income was $20,931. About 10.10% of families and 13.20% of the population were below the poverty line, including 20.50% of those under age 18 and 13.30% of those age 65 or over.
Frederick Benjamin "Fred" Gipson was an American author. He is best known for writing the 1956 novel Old Yeller, which became a popular 1957 Walt Disney film.
