DeKalb County, Tennessee

DeKalb County: County in Tennessee, United States


DeKalb County is a county located in the U.S. state of Tennessee. As of the 2010 census, the population was 18,723 and a population density of 22 people per km². After 10 years in 2020 county had an estimated population of 20,837 inhabitants. Its county seat is Smithville. The county was created 185 years ago in 1836.

Quick Facts about DeKalb County

Population : 20,837 (2020)
Country : United States of America
State : Tennessee (United States)
Different from : DeKalb County, DeKalb County, DeKalb County, DeKalb County, DeKalb County
Area : 852 km2
Water as percent of area : 7.5%
Land as percent of area : 92.5%
Named for : Johann de Kalb
Capital : Smithville
Establishment : January 01, 1837
Time Zone : Central Time Zone
Local time : 12:34:12 (3rd December 2022)
Density : 24 Pop. per km² as of 2020
Population growth : 10.15% (2010-2020)
DeKalb County locator map
Location of DeKalb County on Tennessee map.
Dekalb county tennessee courthouse image
Dekalb county tennessee courthouse
Dekalb county tennessee courthouse image


DeKalb County is located at 35°58'47"N 85°49'58"W (35.9798600, -85.8327500). It has 6 neighbors: Cannon County, Putnam County, Smith County, Warren County, White County and Wilson County.

DeKalb County map

The largest city of DeKalb County is Smithville with a population of 4,978. Other cities include and Dowelltown population 409. See all DeKalb County cities & populated places.

DeKalb County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in DeKalb County.

City Name Population Title
Smithville 4,978 City in Tennessee
Alexandria 1,020 Town in DeKalb County, Tennessee
Dowelltown 409 Human settlement in DeKalb County, Tennessee, United States of America

DeKalb County has 6 neighbours.

  • Smithville


The population of DeKalb County increased by 10.15% in 10 years.

Year Population % Change Method
2010 18,723 - census
2011 18,754 0.17% estimation process
2012 18,869 0.61% estimation process
2013 19,150 1.47% estimation process
2014 19,227 0.4% estimation process
2015 19,292 0.34% estimation process
2016 19,444 0.78% estimation process
2017 19,876 2.17% estimation process
2018 20,133 1.28% estimation process
2019 20,490 1.74% estimation process
2020 20,837 1.67% estimation process

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People born in DeKalb County (3)

People born in DeKalb County, including politician Joe L. Evins, James Edgar Evins, Chief Justice of the Arkansas Supreme Court Griffin Smith, .


Other places with the same name (6)

Tennessee Other Counties (more counties)

County Name Population Title
Shelby County 936,017 County in Tennessee, United States
Davidson County 694,176 County in Tennessee, United States
Nashville 684,410 Consolidated city-county in Davidson County, Tennessee, United States, and the state capital of Tennessee
Memphis 649,705 County seat of Shelby County, Tennessee, United States
New South Memphis 641,608 City in United States of America
Knox County 475,609 County in Maine, United States
Hamilton County 371,662 County in Tennessee, United States
Rutherford County 339,261 County in North Carolina, United States
Williamson County 245,348 County in Tennessee, United States
Montgomery County 214,251 County in Tennessee, United States
Sumner County 195,561 County in Tennessee, United States
Knoxville 190,223 County seat of Knox County, Tennessee, United States; third-largest city in Tennessee
Chattanooga 184,742 City in and county seat of Hamilton County, Tennessee, United States
Clarksville 161,247 City in Tennessee
Sullivan County 158,755 County in New York, United States
East Chattanooga 154,024 City in Hamilton County, Tennessee, United States of America