Sumter County is a county located in the west central portion of Alabama. At the 2020 census, the population was 12,345. Its county seat is Livingston. Its name is in honor of General Thomas Sumter of South Carolina. The University of West Alabama is in Livingston.

Livingston is a city in and the county seat of Sumter County, Alabama, United States and the home of the University of West Alabama. By an act of the state legislature, it was incorporated on January 10, 1835. At the 2010 census the population was 3,485, up from 3,297 in 2000. It was named in honor of Edward Livingston, of the Livingston family of New York.