County · Tennessee
Johnson County, Tennessee
Johnson County, Tennessee. Johnson County had 18,718 residents in 2025 by the Census Bureau's estimate, up 4.3% since 2020, slower than Tennessee (+5.8%). It holds 2 places (1 city, village or borough and 1 census-designated) and 5 census tracts. GEOID 47091.
Residents, July 2025 estimate
18,718
Census Bureau estimate (no margin published)
2020 Census count: 17,948 · ACS 2020-2024: 18,196
Median household income
$53,129
±$4,322 (90% margin)
Tennessee: $69,595
Median home value
$178,600
±$19,569 (90% margin)
Tennessee: $286,700
Median gross rent
$674
±$48 (90% margin)
Tennessee: $1,189
How many people live in Johnson County, and is it growing?
The 2020 Census counted 17,948 residents in Johnson County. The Census Bureau estimates 18,718 for July 1, 2025, up 4.3% since 2020, slower than Tennessee (+5.8%). The 2020-2024 American Community Survey puts the population at 18,196 over 298 square miles of land.
| Measure | Johnson County | Tennessee | Change since 2015-2019 |
|---|---|---|---|
| Total population | 18,196 | 7,066,383 | +443 |
| Households | 7,298±327 | 2,824,277 | +504 |
| Average household size | 2.27±0.10 | 2.45 | no clear change |
| Housing units | 8,761±34 | 3,143,670 | −241 |
Johnson County's population since 2000
From 17,499 in 2000 to 18,718 in 2025: up 7.0%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Johnson County?
Johnson County holds 2 places: 1 city, village or borough (an incorporated place) and 1 census-designated place. The largest is Mountain City with 2,490 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Mountain City | 2,415 | $38,818 |
|---|---|---|
| ButlerGEOID 4710080 | 297 | $64,188 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Johnson County?
The median resident of Johnson County is 46.7 years old; 16.7% are under 18 and 23.5% are 65 or older. The largest group is non-Hispanic white residents at 87.3%, then non-Hispanic Black residents at 4.7%. 2.4% of residents were born outside the United States.
| Measure | Johnson County | Tennessee | Change since 2015-2019 |
|---|---|---|---|
| Median age | 46.7±0.7 | 38.9 | no clear change |
| Under 18 years | 16.7%±0.1 pts | 22.2% | – |
| 65 years and over | 23.5%±0.1 pts | 17.1% | – |
| Hispanic or Latino (any race) | 3.2% | 7.4% | +1.2 pts |
| White alone, not Hispanic | 87.3%±2.0 pts | 71.0% | −5.0 pts |
| Black or African American alone, not Hispanic | 4.7%±1.0 pts | 15.4% | no clear change |
| Asian alone, not Hispanic | 0.3%±0.1 pts | 1.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.6%±0.5 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.2 pts | 0.1% | – |
| Two or more races, not Hispanic | 3.5%±1.5 pts | 3.7% | – |
| Some other race alone, not Hispanic | 0.4%±0.5 pts | 0.4% | – |
| Born outside the United States | 2.4%±0.8 pts | 6.1% | no clear change |
| Speak a language other than English at home (age 5+) | 4.9%±1.1 pts | 8.6% | – |
| Civilian veterans (age 18+) | 9.8%±1.8 pts | 7.3% | – |
| With a disability | 19.6%±2.7 pts | 14.9% | – |
| No health insurance coverage | 13.4%±2.6 pts | 10.0% | no clear change |
| High school graduate or higher (age 25+) | 82.1%±2.9 pts | 90.0% | – |
| Bachelor's degree or higher (age 25+) | 17.5%±2.8 pts | 31.1% | +5.9 pts |
| Graduate or professional degree (age 25+) | 5.2%±1.4 pts | 11.7% | – |
| Moved from another state in the past year | 3.3%±1.4 pts | 3.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Johnson County earn?
Half of Johnson County's 7,298 households earn less than $53,129 a year (±$4,322), against $69,595 in Tennessee. In 2015-2019 the median was $44,310 in 2024 dollars, so it rose by $8,819 after inflation. 21.4% of residents live below the poverty line.
| Measure | Johnson County | Tennessee | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $53,129±$4,322 | $69,595 | +$8,819 |
| Mean household income | $69,507±$5,359 | $96,820 | – |
| Per capita income | $28,841±$2,288 | $39,437 | no clear change |
| People below the poverty line | 21.4%±4.5 pts | 13.8% | no clear change |
| Children under 18 below the poverty line | 39.9%±12.3 pts | 18.8% | no clear change |
| Households receiving SNAP | 15.1%±3.2 pts | 10.8% | – |
| Households with a broadband subscription | 81.4%±4.0 pts | 89.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Johnson County?
Owners occupy 77.5% of Johnson County's occupied homes and renters 22.5%. The median owner-occupied home is valued at $178,600 by its owner (±$19,569). The median renter pays $674 a month including utilities, and 26.7% of renters pay 35% or more of their income on rent.
| Measure | Johnson County | Tennessee | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $178,600±$19,569 | $286,700 | no clear change |
| Median gross rent | $674±$48 | $1,189 | no clear change |
| Renters paying 35% or more of income on rent | 26.7%±9.4 pts | 39.7% | −24.0 pts |
| Median monthly owner costs, with a mortgage | $1,108±$111 | $1,566 | – |
| Owner-occupied homes | 77.5%±3.9 pts | 66.9% | no clear change |
| Housing units | 8,761±34 | 3,143,670 | −241 |
| Homeowner vacancy rate | 0.2%±0.3 pts | 0.9% | – |
| Rental vacancy rate | 4.6%±4.7 pts | 6.1% | – |
| Single-family detached homes | 69.1%±3.6 pts | 68.3% | – |
| Mobile homes | 23.4%±3.4 pts | 8.1% | – |
| Built 2020 or later | 1.9%±0.9 pts | 3.0% | – |
| Built 1939 or earlier | 9.5%±3.0 pts | 5.6% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Johnson County building?
Builders took permits for 6 new housing units across Johnson County in 2025 (6 single-family), 0.3 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Johnson County get to work?
78.4% of Johnson County's workers drive alone and 9.7% work from home. The average trip to work takes 25.6 minutes. The unemployment rate in 2020-2024 averaged 3.2%.
| Measure | Johnson County | Tennessee | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 44.6%±2.9 pts | 62.4% | – |
| Unemployment rate | 3.2%±1.4 pts | 4.7% | no clear change |
| Drove alone to work | 78.4%±4.0 pts | 75.8% | – |
| Carpooled | 10.7%±2.8 pts | 8.4% | – |
| Public transportation | 0.0%±0.7 pts | 0.4% | – |
| Walked | 0.1%±0.1 pts | 1.2% | – |
| Worked from home | 9.7%±2.6 pts | 12.9% | +4.0 pts |
| Mean travel time to work | 25.6 min±2.5 | 25.7 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Johnson County's census tracts?
Johnson County is divided into 5 census tracts. Among those with a reliable estimate, median household income runs from $46,893 (Tract 9562) to $56,415 (Tract 9563).
| Tract 956047091956000 | 1,138±189 | $53,333 |
|---|---|---|
| Tract 956147091956100 | 3,942±497 | $51,449 |
| Tract 956247091956200 | 2,464±330 | $46,893 |
| Tract 956347091956300 | 6,229±665 | $56,415 |
| Tract 956447091956400 | 4,423±536 | $52,188 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Johnson County compare with Tennessee's other counties?
| Measure | Rank |
|---|---|
| Population | 70th of 95 |
| Growth 2020-2025 | 59th of 95 |
| Residents per square mile | 56th of 95 |
| Median household income | 69th of 95 |
| Median home value | 59th of 95 |
| Median gross rent | 89th of 95 |
| Poverty rate | 11th of 95 |
| Bachelor's degree or higher | 53rd of 95 |
| Median age | 14th of 95 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Johnson County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.