Decatur County, Tennessee

Decatur County, Tennessee
Decatur County Courthouse in Decaturville
Decatur County Courthouse in Decaturville
Official seal of Decatur County, Tennessee
Map of Tennessee highlighting Decatur County
Location within the U.S. state of Tennessee
Coordinates: 35°37′N 88°07′W / 35.61°N 88.11°W / 35.61; -88.11
Country United States
State Tennessee
FoundedNovember 1845
Named afterStephen Decatur
SeatDecaturville
Largest cityParsons
Area
 • Total
345 sq mi (890 km2)
 • Land334 sq mi (870 km2)
 • Water11 sq mi (28 km2)  3.2%
Population
 (2020)
 • Total
11,435
 • Estimate 
(2025)
11,820 Increase
 • Density35/sq mi (14/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district7th
Websitedecaturcountytn.gov

Decatur County is a county located in the U.S. state of Tennessee. As of the 2020 census, the population was 11,435. Its county seat is Decaturville.