DeKalb County, Tennessee

DeKalb County
Dekalb County Courthouse in Smithville
Location within the U.S. state of Tennessee
Tennessee's location within the U.S.
Coordinates: 35°59′N 85°50′W / 35.98°N 85.83°W / 35.98; -85.83
Country United States
State Tennessee
Founded1837
Named afterJohann de Kalb
SeatSmithville
Largest citySmithville
Area
  Total
329 sq mi (850 km2)
  Land304 sq mi (790 km2)
  Water25 sq mi (60 km2)  7.5%
Population
 (2020)
  Total
20,080
  Density62/sq mi (24/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district6th
Websitedekalbtennessee.com

DeKalb County is a county located in the U.S. state of Tennessee. As of the 2020 census, the population was 20,080. Its county seat is Smithville. The county was created by the General Assembly of Tennessee on December 2, 1837, and was named for Revolutionary War hero Major General Johann de Kalb.