Johnson County, Tennessee

County in TN, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

18,196

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

46.7

years ∙ half population younger than 46.7, half older

Diversity Index

23.3%

chance two random people differ in race and ethnicity

Nativity

2.4%

foreign-born population

97.6%Native

2.4% Foreign-born

Geographic Context

Location, size, and surroundings

About

Johnson County is a county in Tennessee, United States.

Location

County in TN, US

Co-ordinates

DEC36.453203° N, 81.861247° W

DMS36° 27′ 11.53″ N, 81° 51′ 40.49″ W

Population Density & area

60.98/sq mi (23.54/km²)

Total Area

302.7 sq mi (784 km²)

Land Area

298.4 sq mi (773 km²) · 98.6%

Water Area

4.3 sq mi (11 km²) · 1.4%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

53.5% male

Male 53.5%

Female 46.5%

males per 100 females

Johnson County 115.2

Tennessee 96.4

United States 98

Nativity

2.4%

foreign-born population

97.6%Native

2.4% Foreign-born

% Foreign-born

Johnson County 2.4%

Tennessee 6.1%

United States 14.1%

Age Distribution

How the population is spread across age groups

Median Age

46.7

years ∙ half population younger than 46.7, half older

Johnson County

46.7

Tennessee

38.9

United States

38.9

Dependency ratio

67.1

dependents per 100 working-age adults

Johnson County 67.1

Tennessee 64.6

United States 64.4

AGE DISTRIBUTION

Distribution of age group

Median age

	Johnson County	Tennessee	United States
Age Group
Children (Under 18)	16.7%	22.2%	22%
Working age (18-64)	59.8%	60.7%	60.8%
Senior (65+)	23.5%	17.1%	17.2%
Dependency ratio
Total dependency ratio	67.1	64.6	64.4
Child dependency ratio	27.9	36.5	36.1
Old-age dependency ratio	39.2	28.1	28.3

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

87.3%

Black

4.7%

Asian

0.3%

Hispanic

3.2%

Other

4.5%

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

23.3%

chance two random people differ in race and ethnicity

Johnson County 23.3%

Tennessee 46.5%

United States 61.4%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of Johnson County population

	Johnson County	Tennessee	United States
Hispanic or Latino	3.2%	7.4%	19.3%
Mexican	0.9%	3.8%	11.3%
Puerto Rican	0.1%	0.6%	1.8%
Cuban	0%	0.3%	0.8%
Other Hispanic / Latino	2.1%	2.7%	5.5%
Not Hispanic or Latino	96.8%	92.6%	80.7%
One race	93.3%	88.9%	76.4%
White	87.3%	71%	57.4%
Black or African American	4.7%	15.4%	11.9%
American Indian and Alaska Native	0.6%	0.1%	0.5%
Asian	0.3%	1.9%	5.9%
Native Hawaiian and Other Pacific Islander	0%	0.1%	0.2%
Some Other Race	0.4%	0.4%	0.6%
Two or more races (Multiracial)	3.5%	3.7%	4.3%

Household & Families Composition

Household size, type, and family structure

Household structure

64.7% family

Family 64.7%

Non family 35.3%

% family households

Johnson County 64.7%

Tennessee 64.2%

United States 64.2%

Average household size

2.27

persons per household

Johnson County

2.27

Tennessee

2.45

United States

2.53

Household & Family COMPOSITION

Households

Percentage of Johnson County population

	Johnson County	Tennessee	United States
Total households	7,298	2,824,277	129,227,496
Average houshold size	2.27	2.45	2.53
Family households	4,722	1,813,072	82,990,528
Average family size	2.7	3.04	3.14
Married couple family	3,383	1,321,068	60,637,388
Other families	1,339	492,004	22,353,140
Male householder	329	135,443	6,572,819
Female householder	1,010	356,561	15,780,321
Non-family households	2,576	1,011,205	46,236,968
One-person households	2,233	832,106	37,140,836
Male householder	996	377,158	16,871,444
Senior (65+) living alone	475	115,070	5,225,110
Female householder	1,237	454,948	20,269,392
Senior (65+) living alone	627	220,217	10,089,070
Other living arrangements	343	179,099	9,096,132

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

8,761

housing units

Johnson County 8,761

Tennessee 3,143,670

United States 143,775,355

Occupancy status

83.3% occupied

Occupied 83.3%

Vacant 16.7%

vacancy rate

Johnson County 16.7%

Tennessee 10.2%

United States 10.1%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

70%

Single family houses

70%

Apartments in multi-unit structures

6.5%

Mobile homes

23.4%

Boat, RV, van, etc

Median Year Built

1982

Half of houses were built before 1982, and half after.

Historic ∙ 1939 or earlier

9.5%

Postwar & mid-century ∙ 1940 - 1969

20.7%

Late 20th century ∙ 1970 - 1999

49.7%

Modern ∙ 2000 or later

20.1%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Johnson County	Tennessee	United States
Rooms per unit
Median rooms	5.8	5.7	5.5
1–3 rooms	6.9%	11%	15.1%
4–6 rooms	59.4%	53.7%	51.6%
7+ rooms	33.8%	35.4%	33.4%
Bedrooms
No bedroom / studio	0.7%	1.7%	2.9%
1 bedroom	6.5%	8.2%	10.9%
2 bedrooms	31.8%	24.5%	25%
3 bedrooms	44.1%	45.2%	38.7%
4+ bedrooms	17%	20.4%	22.4%
At a glance
Median year built	1982	1988	1981
Total housing units	8,761	3,143,670	143,775,355

Occupancy Profile

Who is inside and how they use it

Homeownership

77.5% owners

Renter-occupied 22.5%

Owner-occupied 77.5%

homeownership rate

Johnson County 77.5%

Tennessee 66.9%

United States 65.2%

Average household size

2.25

Owner-occupied

2.32

Renter-occupied

owner-occupied average size

Johnson County 2.25

Tennessee 2.53

United States 2.64

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Johnson County	Tennessee	United States
Total occupied units	7,298	2,824,277	129,227,496
Year moved in
2020 or later	23.7%	26.2%	24.8%
2010 to 2019	29.3%	39.4%	39.6%
2000 to 2009	21.7%	15.7%	16.4%
1999 or earlier	25.2%	18.8%	19.1%
Occupants per room
1.00 or fewer	95.2%	97.8%	96.6%
1.01 to 1.50	3.6%	1.5%	2.2%
1.51 or more	1.2%	0.6%	1.2%
Vehicles availability
No vehicles	4.3%	5.2%	8.4%
1 vehicle	30.1%	30.9%	33.1%
2 vehicles	38.6%	38%	36.6%
3 or more vehicles	27%	25.9%	21.9%
House heating fuel used
Gas	19.2%	34.1%	51.4%
Electricity	61.1%	63.7%	41.3%
Solar	0%	0%	0.3%
Fuel oil, kerosene etc	9.4%	0.3%	3.9%
All other fuels	8.4%	1.3%	2%
No fuel used	2%	0.5%	1.2%
Selected characteristics
Lacking complete plumbing	0.7%	0.3%	0.4%
Lacking complete kitchen	0.3%	0.8%	0.8%
No telephone service available	2%	1%	0.9%

Housing Value

What owner-occupied units are worth

Median home value

$178,600

owner-occupied units

Median value(USD)

Johnson County

$178,600

Tennessee

$286,700

United States

$332,700

Housing Cost Burden

20.6%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

20.6%

Owners without a mortgage

6.7%

Renters

36.9%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	Johnson County	Tennessee	United States
Property value
Median Value	$178,600	$286,700	$332,700
Under $100,000	24.9%	13%	11.4%
$100,000 - $200,000	30%	18.5%	15.8%
$200,000 - $300,000	16.4%	21%	17.8%
$300,000 - $500,000	18.9%	28.3%	26.9%
$500,000 - $1,000,000	8.9%	15.3%	20.9%
$1,000,000 and more	0.8%	3.8%	7.1%
Owner-occupied households
With a mortgage	31.7%	57.9%	60.6%
Without a mortgage	68.3%	42.1%	39.4%
Median monthly owner costs
With a mortgage	$1,108	$1,566	$1,963
Without a mortgage	$338	$464	$638
Gross rent
Median rent	$674	$1,189	$1,413

Education Profile

How educated is the community and how education pays off

Adults with a college degree

17.5%

of adults 25+ with a bachelor's degree or higher

Johnson County 17.5%

Tennessee 31.1%

United States 35.7%

Adults without a high school diploma

17.9%

of adults (25+) without a high school diploma

Johnson County 17.9%

Tennessee 10%

United States 10.4%

School Enrollment

Who is enrolled in school and at what level

School enrollment

2,945

population (age 3+) enrolled in school

Nursery / Preschool

4.9%

K–12

77.1%

College / Undergraduate

15.5%

Graduate / Professional

2.5%

College-going rate (18-24 yr olds)

18.4%

of 18-24-year-olds in college or graduate school

Johnson County

18.4%

Tennessee

36.1%

United States

40.9%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	Johnson County	Tennessee	United States
Total enrolled (age 3+)	2,945	1,593,794	80,089,790
Nursery / preschool	4.9%	5.4%	5.7%
K–12	77.1%	70.7%	67.6%
Kindergarten	2.5%	5.3%	5%
Elementary: Grades 1–4	26.1%	21%	19.8%
Elementary: Grades 5–8	23.6%	21.9%	21%
High School: Grades 9–12	24.8%	22.5%	21.7%
College or graduate school	18%	24%	26.7%
College, undergraduate	15.5%	18.7%	21%
Graduate, professional school	2.5%	5.3%	5.8%
College-going rate · 18-24 yr olds	18.4%	36.1%	40.9%
School type
Public school	76.8%	79.8%	82%
Private school	23.2%	20.2%	18%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

13,900

population 25 years and over

Total adults (25+)

Less than 9th grade

9th-12th, no diploma

10.9%

HS graduate

38.7%

Some college no degree

19%

Associates degree

Bachelors degree

12.4%

Graduate or professional degree

5.2%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

57.6% · 42.4%

9th-12th, no diploma

59.2% · 40.8%

HS graduate

58.6% · 41.4%

Some college no degree

43.8% · 56.2%

Associates degree

38.6% · 61.4%

Bachelors degree

49.3% · 50.7%

Graduate or professional degree

56.1% · 43.9%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	Johnson County	Tennessee	United States
Population (25+)	13,900	4,870,330	230,807,303
Less than 9th grade	7%	3.7%	4.7%
9th–12th, no diploma	10.9%	6.3%	5.7%
High school diploma or GED	38.7%	31.2%	26%
Some college, no degree	19%	19.9%	19.1%
Associate's degree	7%	7.9%	8.8%
Bachelor's degree or higher	17.5%	31.1%	35.7%
Bachelor's degree	12.4%	19.4%	21.6%
Graduate or professional	5.2%	11.7%	14.1%
High School or higher	82.1%	90%	89.6%

Earnings by education level

percentage as applicable

Median Earnings

$36,940

Median earnings for adults 25+, by level

Less than HS graduate

$29,513

HS graduate

$36,045

Some college or associates

$37,136

Bachelors degree

$56,587

Graduate or professional degree

$50,208

Poverty Rate

11.2%

for ages 25+, with bachelors degree or higher

Less than HS graduate

32%

HS graduate

15.8%

Some college or associates

16.8%

Bachelors degree or higher

11.2%

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Johnson County	Tennessee	United States
Median earnings
Population 25+, with earnings	$36,940	$48,058	$52,696
Less than high school graduate	$29,513	$31,689	$32,485
High school graduate (includes equivalency)	$36,045	$38,347	$40,153
Some college or associate's degree	$37,136	$44,566	$47,260
Bachelor's degree	$56,587	$61,810	$70,044
Graduate or professional degree	$50,208	$76,817	$90,720
Poverty rates
Less than high school graduate	32%	27.9%	24.2%
High school graduate (includes equivalency)	15.8%	15.1%	14.4%
Some college or associate's degree	16.8%	9.7%	9.8%
Bachelor's degree or higher	11.2%	4.3%	4.5%

Insights for Johnson County, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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