Overton County is a county located in the U.S. state of Tennessee. As of the 2020 census, the population was 22,511. Its county seat is Livingston. Overton County is part of the Cookeville, TN Micropolitan Statistical Area.

Livingston is a town in Overton County, Tennessee, United States, and serves as the county seat. The population was 3,905 at the 2020 census and 4,058 at the 2010 census. The current mayor, Curtis Hayes, began serving his mayoral position in September 2006.