Thomaston is a city located in Upson County Georgia. It is also the county seat of Upson County. With a 2020 population of 8,824, it is the 100th largest city in Georgia and the 3363rd largest city in the United States . Thomaston is currently growing at a rate of 0.41% annually but its population has decreased by -3.77% since the most recent census, which recorded a population of 9,170 in 2010. Thomaston reached it's highest population of in . Spanning over 10 miles, Thomaston has a population density of 926 people per square mile.
The average household income in Thomaston is $49,151 with a poverty rate of 31.44%. The median rental costs in recent years comes to $626 per month, and the median house value is $88,900. The median age in Thomaston is 34.6 years, 30.2 years for males, and 35.8 years for females.