Jasper is a town in and the county seat of Marion County, Tennessee, United States. The population was 3,612 at the 2020 census. The town was formed in 1820 from lands acquired from Betsy Pack (1770–1851), daughter of Cherokee Chief John Lowery. Jasper is part of the Chattanooga, TN–GA Metropolitan Statistical Area.

Marion County is a county located in the U.S. state of Tennessee. As of the 2020 census, the population was 28,837. Its county seat is Jasper. Marion County is part of the Chattanooga, AL–TN–GA Metropolitan Statistical Area. Marion County is in the Central time zone, while Chattanooga proper is in the Eastern time zone.