DeKalb County
Also known as DeKalb County, Tennessee, DeKalb County, TN
county in Tennessee, United States
Key facts
- Country
- United States
- State
- Tennessee
- Named after
- Johann de Kalb
- Seat
- Smithville
- Largest city
- Smithville
- Total
- 329 sq mi (850 km )
- Land
- 304 sq mi (790 km )
- Water
- 25 sq mi (65 km ) 7.5%
- Estimate 2025
- 21,873
- Density
- 62/sq mi (24/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
- Congressional district
- 6th
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Article
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.
History