County Maps US

Washington County, Nebraska

A county in Nebraska, ranked 17 of 93 by population.

CountyFIPS 31177

Within Nebraska
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 Blair, the county seat, located via the 2025 Census Gazetteer.

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Population
21,302
+370 (+1.8%) since 2020
Land area
389.9
square miles. A further 0.8% of the total area is water
Population density
54.6
people per square mile, computed rather than published
County seat
Blair
Seat of county government.
Established
1854
171 years ago
Largest city
Blair city
Population 7,997.

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, Nebraska 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 614 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 93 counties of Nebraska, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn NebraskaNationally
Population21,30217th of 931,761st of 3,144
Land area389.9 sq mi89th of 932,574th of 3,144
Population density54.6 per sq mi9th of 931,388th of 3,144
Median household income$94,3962nd of 93232nd 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
Population21,302Vintage 2025 Population Estimates
Population in 202020,932Vintage 2025 Population Estimates
2020 estimates base?20,867Vintage 2025 Population Estimates
Land area389.9 sq mi2025 Gazetteer Files
Water area3.3 sq mi2025 Gazetteer Files
Total area393.2 sq mi2025 Gazetteer Files
Population density?54.6 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$94,396American Community Survey 2020-2024 5-Year Estimates
Median home value$297,600American Community Survey 2020-2024 5-Year Estimates
Median age42.9American Community Survey 2020-2024 5-Year Estimates
Households8,429American Community Survey 2020-2024 5-Year Estimates
Housing units8,711American 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
+38
233 births, 195 deaths
Net migration
-22
More people moved out than moved in.

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
Dodge CountyNebraska26 mi38,057
Harrison CountyIowa22 mi14,623
Douglas CountyNebraska20 mi606,460
Burt CountyNebraska17 mi6,678
Pottawattamie CountyIowa13 mi92,996

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

All 93 counties of Nebraska

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

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