• county
  • FIPS 47041
  • Largest town: Smithville

DeKalb County, Tennessee

DeKalb County had 21,747 residents in the Census Vintage 2024 estimate, on 304.4 square miles of land. It ranks 65th of 95 in Tennessee by population and 73rd by land area.

Population
21,747
#65 of 95 in Tennessee · #1,733 in US
Area
304.4 sq mi
#73 of 95 in Tennessee · #2,803 in US
Density
71 / sq mi
#50 of 95 in Tennessee · #1,163 in US
Median household income
$57,936
#45 of 95 in Tennessee · #2,038 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

DeKalb County within Tennessee. Pin: Nashville.

Measure from here

Tools and pages that start from DeKalb County

DeKalb County population, land area and income

DeKalb County had 21,747 residents in the Census Vintage 2024 estimate, on 304.4 square miles of land. It ranks 65th of 95 in Tennessee by population and 73rd by land area. That works out to 71.4 people per square mile, below the US average of 96.3, and above the national county median.

The median county-equivalent in Tennessee has 32,883 residents; DeKalb County is somewhat smaller.

Its SAIPE 2023 median household income of $57,936 is below the national county median among 3,143 counties with an estimate.

National rank among 3,144

Population

21,747

3144th1st

1733rd of 3,144 (US)

Land area

304 sq mi

3144th1st

2803rd of 3,144 (US)

Density

71.4 / sq mi

3144th1st

1163rd of 3,144 (US)

Median household income

$57,936

3143rd1st

2038th of 3,143 (US)

Rank within Tennessee (95)

Population

21,747

95th1st

65th of 95 (TN)

Land area

304 sq mi

95th1st

73rd of 95 (TN)

Density

71.4 / sq mi

95th1st

50th of 95 (TN)

Median household income

$57,936

95th1st

45th of 95 (TN)

How DeKalb County's population changed since 2020

DeKalb County gained 1,556 residents between the July 2020 and July 2024 estimates, a rise of 7.7%. That ranks 13th of 95 in Tennessee for growth. The median Tennessee county changed by +4.4%, and the state as a whole by +4.3%.

Since the April 2020 estimates base, DeKalb County recorded 1,107 births and 1,295 deaths, a natural change of -188. Net international migration added +142 and net domestic migration, people moving to or from other US counties, came to +1,690. The largest single component was domestic migration, which added 1,690 people.

20.2k202020.5k202121.0k202221.3k202321.7k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
1,107
Deaths
1,295
Net international migration
+142
Net domestic migration
+1,690
Change, July 2023 to July 2024
+410

Where DeKalb County is

The Census internal point of DeKalb County is at 35.982200, -85.833600. It sits in UTM zone 16N. The map shades Tennessee's 95 county-equivalents by population change from 2020 to 2024, darker for faster growth, with DeKalb County outlined. Dots are towns of 1,000+ people with residents in it.

Warren County: +6.2%Bledsoe County: +4.3%Cheatham County: +3.7%Crockett County: +0.5%Putnam County: +6.0%Houston County: +2.8%Macon County: +7.6%Sequatchie County: +11.2%Fayette County: +6.2%Trousdale County: +4.5%Union County: +6.1%Claiborne County: +3.1%Weakley County: +0.8%Coffee County: +5.4%Johnson County: +2.8%Overton County: +4.3%Lake County: -8.1%Moore County: +4.7%Hardeman County: -0.0%Jefferson County: +7.8%Smith County: +4.1%Robertson County: +7.5%Gibson County: +1.9%Henry County: +2.3%Grundy County: +4.4%Decatur County: +3.2%Greene County: +4.3%Hamblen County: +4.9%Humphreys County: +2.9%Knox County: +5.5%Roane County: +5.7%Lewis County: +6.4%Rhea County: +4.4%Rutherford County: +9.8%Montgomery County: +11.2%Lauderdale County: -2.0%Shelby County: -2.1%Tipton County: +1.9%Perry County: +7.2%Stewart County: +4.8%Chester County: +2.8%Washington County: +4.8%Polk County: +4.4%Van Buren County: +8.3%Dyer County: -0.8%Davidson County: +1.9%Cocke County: +4.3%Williamson County: +7.8%Benton County: +2.0%Dickson County: +5.9%Lawrence County: +5.2%Hamilton County: +5.0%McNairy County: +0.9%Meigs County: +8.8%Hawkins County: +4.7%Blount County: +4.8%White County: +6.1%Marshall County: +9.8%Sullivan County: +2.8%Campbell County: +2.4%Haywood County: -4.1%Bradley County: +4.5%Franklin County: +5.4%Sumner County: +7.2%Hardin County: +2.4%Grainger County: +6.4%Hickman County: +3.6%Pickett County: +2.2%Carroll County: +2.4%Henderson County: +1.3%Sevier County: +1.3%Hancock County: +6.2%Scott County: +2.9%McMinn County: +6.4%Morgan County: +4.3%Lincoln County: +4.0%Obion County: -1.7%Unicoi County: -0.0%Wayne County: -1.5%Cannon County: +4.0%Fentress County: +8.6%Loudon County: +12.7%Wilson County: +14.3%Bedford County: +7.6%Monroe County: +5.9%DeKalb County: +7.7%Marion County: +3.2%Carter County: +1.9%Clay County: +3.5%Madison County: +1.6%Cumberland County: +6.9%Anderson County: +5.3%Maury County: +11.4%Giles County: +2.1%Jackson County: +6.4%
Change 2020 to 2024
  1. < +1.9%
  2. < +3.7%
  3. < +4.9%
  4. < +6.4%
  5. ≥ +6.4%
no data

Orange pin: DeKalb County internal point. Dark pin: Nashville.

Internal point

Decimal
35.982200, -85.833600
DMS
35°58'55.92"N 85°50'0.96"W
UTM
16N 605150.7E 3982603.1N
Geohash
dn6uwy3gs
Plus code
867PX5J8+VH

Towns in DeKalb County

One incorporated place of 1,000+ people has residents in DeKalb County, 5,546 people together, or 26% of the county. Each figure counts only the part of the town inside DeKalb County; towns marked "part" extend into another county. The largest is Smithville with 5,546.

  1. 01Smithville5,546
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering DeKalb County

The Census 2024 county adjacency file lists 6 neighbors for DeKalb County. The most populous is Wilson County, TN, with 169,948 residents. Distances run between Census internal points in a straight line.

Distance to Nashville and the nearest big city

Nashville is 54.6 miles WNW of DeKalb County's internal point in a straight line. The nearest place of 100,000 or more is Murfreesboro, TN (population 168,387), 34.1 miles away. The nearest place of 10,000 or more is McMinnville, TN (population 14,032), 20.6 miles away.

DeKalb County FIPS code

The FIPS code of DeKalb County is 47041: state code 47 for Tennessee plus county code 041. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $57,936.

Questions people ask

What is the population of DeKalb County, Tennessee?

The Census Vintage 2024 estimate for July 1, 2024 is 21,747. That is up 1,556 people (7.7%) from the July 2020 estimate of 20,191.

What is the FIPS code of DeKalb County?

47041. The first two digits (47) are Tennessee; the last three (041) identify the county.

What is the largest town in DeKalb County?

Smithville, with 5,546 residents inside DeKalb County in 2024.

Which counties border DeKalb County?

6 county-equivalents border it in the Census 2024 adjacency file: Wilson County, TN; Putnam County, TN; Warren County, TN; White County, TN; Smith County, TN; Cannon County, TN.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.