County Maps US

Washoe County, Nevada

A county in Nevada, ranked 2 of 17 by population.

CountyFIPS 32031

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

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Population
509,386
+21,658 (+4.4%) since 2020
Land area
6,316
square miles. A further 3.4% of the total area is water
Population density
80.7
people per square mile, computed rather than published
County seat
Reno
Seat of county government.
Established
1861
164 years ago
Largest city
Reno city
Population 283,621.

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 Washoe 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 Washoe County, Nevada 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 260 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 Washoe County ranks

Position among the 17 counties of Nevada, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn NevadaNationally
Population509,3862nd of 17147th of 3,144
Land area6,316 sq mi7th of 1753rd of 3,144
Population density80.7 per sq mi3rd of 171,071st of 3,144
Median household income$88,0964th of 17348th of 3,143

Full data for Washoe County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population509,386Vintage 2025 Population Estimates
Population in 2020487,728Vintage 2025 Population Estimates
2020 estimates base?486,491Vintage 2025 Population Estimates
Land area6,316 sq mi2025 Gazetteer Files
Water area225 sq mi2025 Gazetteer Files
Total area6,541 sq mi2025 Gazetteer Files
Population density?80.7 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$88,096American Community Survey 2020-2024 5-Year Estimates
Median home value$539,900American Community Survey 2020-2024 5-Year Estimates
Median age39.0American Community Survey 2020-2024 5-Year Estimates
Households199,296American Community Survey 2020-2024 5-Year Estimates
Housing units218,165American 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
+269
4,918 births, 4,649 deaths
Net migration
+3,703
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 13 areas bordering Washoe 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
Lassen CountyCalifornia101 mi28,117
Humboldt CountyNevada75 mi17,267
Pershing CountyNevada74 mi6,421
Modoc CountyCalifornia56 mi8,426
Storey CountyNevada56 mi4,260
Lake CountyOregon33 mi8,187
Churchill CountyNevada28 mi25,851
Carson CityNevada22 mi58,571
Sierra CountyCalifornia19 mi3,098
Placer CountyCalifornia10 mi442,081
Nevada CountyCalifornia8.9 mi101,911
Lyon CountyNevada6.2 mi65,088
Harney CountyOregon1.9 mi7,380

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

Side by side

All 17 counties of Nevada

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

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