Thomaston is a city in and the county seat of Upson County, Georgia, United States. The population was 9,170 at the 2010 census. It is the principal city of and is included in the Thomaston, Georgia Micropolitan Statistical Area, which is included in the Atlanta - Sandy Springs (GA) - Gainesville (GA) - Alabama (partial) Combined Statistical Area. History Thomaston was incorporated on January 1, 1825, and designated as the seat of Upson County. The town was named for General Jett Thomas, an Indian fighter in the War of 1812. Geography Thomaston is located near the center of Upson County at 32.90 N, -84.333333 W (32° 54′ 0″ N, 84° 20′ 0″ W). The city is located in the west central Piedmont region of the state. U.S. Route 19 is the main north-south route through the city, leading north 16 mi (26 km) to Zebulon and south 28 mi (45 km) to Butler. Georgia State Routes 36 and 74 are the main east-west routes through the city. GA-36 leads northeast 17 mi (27 km) to Barnesville and southwest 18 mi (29 km) to Woodland. GA-74 leads east 12 mi (19 km) to Yatesville and northwest 19 mi (31 km) to Woodbury. Demographics 2020 census As of the 2020 United States census, there were 9,816 people, 3,333 households, and 1,779 families residing in the city. 2000 census As of the census of 2000, there were 9,411 people, 3,862 households, and 2,386 families residing in the city. The population density was . There were 4,152 housing units at an average density of . The racial makeup of the city was 62.75% White, 35.30% African American, 0.28% Native American, 0.61% Asian, 0.01% Pacific Islander, 0.53% from other races, and 0.53% from two or more races. Hispanic or Latino of any race were 1.77% of the population. There were 3,862 households, out of which 28.2% had children under the age of 18 living with them, 37.0% were married couples living together, 21.4% had a female householder with no husband present, and 38.2% were non-families. 35.2% of all households were made up of individuals, and 17.8% had someone living alone who was 65 years of age or older. The average household size was 2.33 and the average family size was 3.00. In the city, the population was spread out, with 25.3% under the age of 18, 8.4% from 18 to 24, 25.9% from 25 to