Benjamin is a city in and the county seat of Knox County, Texas, United States. Its population was 196 at the 2020 census, making it the leas…Benjamin is a city in and the county seat of Knox County, Texas, United States. Its population was 196 at the 2020 census, making it the least-populated county seat in Texas. The community was founded in 1884 by Hilory G. Bedford, president and controlling stockholder in the Wichita and Brazos Stock Company. He named it Benjamin after his son, who had been killed by lightning. To attract additional settlers, Bedford gave his stockholders a 50-acre tract of land and set aside 40 more acres for a town square. Benjamin was designed as the Knox County seat when it was organized in 1886; a school also opened in that year. A jail built in 1887 still stands as a private residence, and the old bank stands next to the sheriff's office. Benjamin was incorporated in 1928, and the population was 485 in the 1930 census. Two structures in the community, a courthouse and school building, were constructed with Works Projects Administration labor. That courthouse replaced the previous stone structure built in 1888. The number of inhabitants reached a high of 599 in 1940, but that figure slowly decreased during the latter half of the 20th century.