County Maps US

Washington County, Kentucky

A county in Kentucky, ranked 91 of 120 by population.

CountyFIPS 21229

Within Kentucky
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 Springfield, the county seat, located via the 2025 Census Gazetteer.

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Population
12,368
+326 (+2.7%) since 2020
Land area
297.3
square miles. A further 1.3% of the total area is water
Population density
41.6
people per square mile, computed rather than published
County seat
Springfield
Seat of county government.
Established
1792
233 years ago
Largest city
Springfield city
Population 3,033.

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, Kentucky 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 800 by 730 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 120 counties of Kentucky, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn KentuckyNationally
Population12,36891st of 1202,263rd of 3,144
Land area297.3 sq mi65th of 1202,812th of 3,144
Population density41.6 per sq mi82nd of 1201,639th of 3,144
Median household income$61,61639th of 1201,927th 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
Population12,368Vintage 2025 Population Estimates
Population in 202012,042Vintage 2025 Population Estimates
2020 estimates base?12,027Vintage 2025 Population Estimates
Land area297.3 sq mi2025 Gazetteer Files
Water area3.9 sq mi2025 Gazetteer Files
Total area301.2 sq mi2025 Gazetteer Files
Population density?41.6 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$61,616American Community Survey 2020-2024 5-Year Estimates
Median home value$179,200American Community Survey 2020-2024 5-Year Estimates
Median age42.3American Community Survey 2020-2024 5-Year Estimates
Households4,852American Community Survey 2020-2024 5-Year Estimates
Housing units5,244American 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
-15
148 births, 163 deaths
Net migration
+72
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
Nelson CountyKentucky40 mi49,036
Marion CountyKentucky25 mi20,115
Mercer CountyKentucky16 mi23,733
Anderson CountyKentucky16 mi25,225
Boyle CountyKentucky3.3 mi31,632

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

All 120 counties of Kentucky

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

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