
Thomaston
- County:
- Upson County
- County Seat:
- Yes
- Area (mi²):
- 9.539
- State:
- Georgia
Thomaston is a city located in Upson County, Georgia. Thomaston has a 2025 population of 9,909. It is also the county seat of Upson County. Thomaston is currently growing at a rate of 0.17% annually and its population has increased by 0.84% since the most recent census, which recorded a population of 9,826 in 2020.
The average household income in Thomaston is $60,389 with a poverty rate of 34.16%. The median age in Thomaston is 38 years: 32.5 years for males, and 41.4 years for females.