Washington County, Tennessee Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 12th-largest in Tennessee
The population of Washington County, Tennessee is 134,693 as of the 2023 American Community Survey, making it the 12th-largest county in Tennessee. The median household income is $61,051, the median home value is $231,700, and the median age is 40.3.
The population of Washington County has grown 13.2% since 2010 (123,393 → 139,642), a +0.89% annualized rate.
134,693
Population
+0.89%
Annual growth
412
People / sq mi
$61,051
Median Income
$231,700
Median Home Value
Washington County covers 327 sq mi of land at 412.5 people per square mile.
About Washington County, TN
Washington County is a county in Tennessee with a population of 134,693. It ranks #12 among counties in Tennessee by population. The median age is 40.3, older than the national median. The population is 49.3% male and 50.7% female.
The median household income in Washington County is $61,051, below the US median of $74,580. 9.7% of residents live below the federal poverty level. Home values sit at a median of $231,700, with monthly rent averaging $951. The homeownership rate of 64.4% is close to the national rate of 64.8%.
Educational attainment in Washington County reflects 33.5% of adults 25 and older holding a bachelor's degree or higher, near the national average of 34.3%. Roughly 10.4% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 21.5 minutes each way.
Washington County Population History (2010-2024)
The county of Washington County had a population of 123,393 in 2010 and 139,642 in 2024, a 13.2% growth over 14 years. The peak was 139,642 in 2024. Average annual growth rate: 0.89%.
139,642
Population (2024)
123,393
Population (2010)
139,642
Peak (2024)
0.89%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 123,393 |
| 2011 | 123,910 |
| 2012 | 124,914 |
| 2013 | 125,454 |
| 2014 | 125,821 |
| 2015 | 126,238 |
| 2016 | 127,439 |
| 2017 | 127,869 |
| 2018 | 129,025 |
| 2019 | 129,670 |
| 2020 | 133,225 |
| 2021 | 133,473 |
| 2022 | 136,339 |
| 2023 | 138,628 |
| 2024 | 139,642 |
Race & Ethnicity
| White | 87.7% |
| Black or African American | 3.8% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.0% |
| Two or More Races | 0.0% |
Age & Sex
40.3
Median Age
50.7%
Female
49.3%
Male
18.6%
Age 65+
Age Distribution
Children (under 15): 15.2% · Seniors (65+): 18.6%
Income & Poverty
| Median household income | $61,051$-6,046 vs state |
| Mean household income | $85,716 |
| Per-capita income | $36,493 |
| Poverty rate | 9.7%-0.2% vs state |
| Unemployment rate | 3.0% |
| Employment-to-population | 56.9% |
Top Industries by Employment
The largest employment sector in Washington County is professional & business services, accounting for 27.7% of workers.
How residents commute
0.3%
Drive alone
1.4%
Carpool
80.2%
Public transit
10.4%
Work from home
21.5 min
Avg commute
Housing
$231,700$-25,100 vs state
Median home value
$951
Median rent
64.4%
Homeownership rate
61,426
Total housing units
91.5%
Occupied
8.5%
Vacant
35.6%
Renter-occupied
Social & access
89.5%
With health insurance
93.7%
With broadband internet
37.5%
Foreign-born
8.9%
Veterans (18+)
16.5%
With a disability
95.2%
Speak language other than English at home
Education
91.1%
High School+
33.5%
Bachelor's+
Largest cities in Tennessee
Other counties in Tennessee
Part of Tennessee
Metro areas in Tennessee
County rankings
Frequently Asked Questions
Washington County, Tennessee has a population of 134,693 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 12th-largest county in Tennessee. Population density is 412 people per square mile.
The population of Washington County has grown 13.2% since 2010 (123,393 → 139,642), a +0.89% annualized rate.
The median household income in Washington County, Tennessee is $61,051, with mean (average) household income of $85,716 and per-capita income of $36,493. 9.7% of residents live below the federal poverty level.
In Washington County, the largest racial and ethnic groups are White (87.7%), Black or African American (3.8%), Hispanic or Latino (1.0%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Washington County, Tennessee is 40.3 years. Residents are 50.7% female and 49.3% male.
The median home value in Washington County is $231,700 and median monthly rent is $951. 64.4% of occupied housing units are owner-occupied. The county has 61,426 total housing units, 8.5% of which are vacant.
The largest employment sector in Washington County, Tennessee is professional, scientific, and management services, employing 27.7% of workers. The unemployment rate is 3.0%.
Nashville-Davidson is among the largest cities associated with Washington County, Tennessee, with a population of 684,298.
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Full rankings of Tennessee counties
Statewide data for Tennessee
Population, race, income, age, and trends across Tennessee
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.