Sumter is a city located in Sumter County, South Carolina. With a 2020 population of 39,080, it is the 10th largest city in South Carolina and the 1004th largest city in the United States. Sumter is currently declining at a rate of -0.73% annually and its population has decreased by -3.56% since the most recent census, which recorded a population of 40,524 in 2010. Sumter reached it's highest population of 41,943 in 1990. Spanning over 33 miles, Sumter has a population density of 1,198 people per square mile.
The average household income in Sumter is $57,642 with a poverty rate of 20.71%. The median rental costs in recent years comes to $805 per month, and the median house value is $140,300. The median age in Sumter is 32.4 years, 30.4 years for males, and 34.8 years for females. For every 100 females there are 85.9 males.