• county
  • FIPS 47091
  • Largest town: Mountain City

Johnson County, Tennessee

Johnson County had 18,506 residents in the Census Vintage 2024 estimate, on 298.4 square miles of land. It ranks 70th of 95 in Tennessee by population and 75th by land area.

Population
18,506
#70 of 95 in Tennessee · #1,905 in US
Area
298.4 sq mi
#75 of 95 in Tennessee · #2,810 in US
Density
62 / sq mi
#58 of 95 in Tennessee · #1,281 in US
Median household income
$51,597
#76 of 95 in Tennessee · #2,590 in US

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

Johnson County within Tennessee. Pin: Nashville.

Measure from here

Tools and pages that start from Johnson County

Johnson County population, land area and income

Johnson County had 18,506 residents in the Census Vintage 2024 estimate, on 298.4 square miles of land. It ranks 70th of 95 in Tennessee by population and 75th by land area. That works out to 62.0 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; Johnson County is somewhat smaller.

Its SAIPE 2023 median household income of $51,597 is in the bottom quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

18,506

3144th1st

1905th of 3,144 (US)

Land area

298 sq mi

3144th1st

2810th of 3,144 (US)

Density

62.0 / sq mi

3144th1st

1281st of 3,144 (US)

Median household income

$51,597

3143rd1st

2590th of 3,143 (US)

Rank within Tennessee (95)

Population

18,506

95th1st

70th of 95 (TN)

Land area

298 sq mi

95th1st

75th of 95 (TN)

Density

62.0 / sq mi

95th1st

58th of 95 (TN)

Median household income

$51,597

95th1st

76th of 95 (TN)

How Johnson County's population changed since 2020

Johnson County gained 512 residents between the July 2020 and July 2024 estimates, a rise of 2.8%. That ranks 66th 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, Johnson County recorded 651 births and 1,306 deaths, a natural change of -655. Net international migration added +76 and net domestic migration, people moving to or from other US counties, came to +1,124. The largest single component was domestic migration, which added 1,124 people.

18.0k202018.1k202118.0k202218.4k202318.5k2024
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
651
Deaths
1,306
Net international migration
+76
Net domestic migration
+1,124
Change, July 2023 to July 2024
+130

Where Johnson County is

The Census internal point of Johnson County is at 36.453200, -81.861200. It sits in UTM zone 17N. The map shades Tennessee's 95 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Johnson 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: Johnson County internal point. Dark pin: Nashville.

Internal point

Decimal
36.453200, -81.861200
DMS
36°27'11.52"N 81°51'40.32"W
UTM
17N 422827.8E 4034561.5N
Geohash
dnmz3hn7r
Plus code
868WF43Q+7G

Towns in Johnson County

One incorporated place of 1,000+ people has residents in Johnson County, 2,486 people together, or 13% of the county. Each figure counts only the part of the town inside Johnson County; towns marked "part" extend into another county. The largest is Mountain City with 2,486.

  1. 01Mountain City2,486
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Johnson County

The Census 2024 county adjacency file lists 7 neighbors for Johnson County, including 5 across a state line. The most populous is Sullivan County, TN, with 162,703 residents. Distances run between Census internal points in a straight line.

Distance to Nashville and the nearest big city

Nashville is 274.8 miles W of Johnson County's internal point in a straight line. The nearest place of 100,000 or more is Winston-Salem, NC (population 255,769), 92.4 miles away. The nearest place of 10,000 or more is Boone, NC (population 20,080), 19.8 miles away.

Johnson County FIPS code

The FIPS code of Johnson County is 47091: state code 47 for Tennessee plus county code 091. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $51,597.

Questions people ask

What is the population of Johnson County, Tennessee?

The Census Vintage 2024 estimate for July 1, 2024 is 18,506. That is up 512 people (2.8%) from the July 2020 estimate of 17,994.

What is the FIPS code of Johnson County?

47091. The first two digits (47) are Tennessee; the last three (091) identify the county.

What is the largest town in Johnson County?

Mountain City, with 2,486 residents inside Johnson County in 2024.

Which counties border Johnson County?

7 county-equivalents border it in the Census 2024 adjacency file: Sullivan County, TN; Carter County, TN; Watauga County, NC; Washington County, VA; Ashe County, NC; Avery County, NC; Grayson County, VA.

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.