County Maps US

Washington County, Tennessee

A county in Tennessee, ranked 12 of 95 by population.

CountyFIPS 47179

Within Tennessee
Washington County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Jonesborough, the county seat, located via the 2025 Census Gazetteer.

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Population
141,199
+7,988 (+6.0%) since 2020
Land area
326.5
square miles. A further 1.0% of the total area is water
Population density
432
people per square mile, computed rather than published
County seat
Jonesborough
Seat of county government.
Established
1777
248 years ago
Largest city
Johnson City city
Population 72,680 for the whole place, which extends beyond this county.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Washington County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Washington County, Tennessee from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 746 by 800 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Washington County ranks

Position among the 95 counties of Tennessee, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn TennesseeNationally
Population141,19912th of 95480th of 3,144
Land area326.5 sq mi68th of 952,748th of 3,144
Population density432 per sq mi8th of 95324th of 3,144
Median household income$62,80932nd of 951,819th of 3,143

Full data for Washington County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population141,199Vintage 2025 Population Estimates
Population in 2020133,211Vintage 2025 Population Estimates
2020 estimates base?132,999Vintage 2025 Population Estimates
Land area326.5 sq mi2025 Gazetteer Files
Water area3.3 sq mi2025 Gazetteer Files
Total area329.8 sq mi2025 Gazetteer Files
Population density?432 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$62,809American Community Survey 2020-2024 5-Year Estimates
Median home value$249,000American Community Survey 2020-2024 5-Year Estimates
Median age40.2American Community Survey 2020-2024 5-Year Estimates
Households56,759American Community Survey 2020-2024 5-Year Estimates
Housing units62,077American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-459
1,269 births, 1,728 deaths
Net migration
+2,083
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 5 areas bordering Washington County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Greene CountyTennessee31 mi73,831
Sullivan CountyTennessee30 mi163,759
Unicoi CountyTennessee21 mi17,856
Carter CountyTennessee10 mi57,361
Hawkins CountyTennessee2.5 mi59,559

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 95 counties of Tennessee

Open the interactive Tennessee county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.