County Maps US

Skagit County, Washington

A county in Washington, ranked 11 of 39 by population.

CountyFIPS 53057

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

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Population
132,975
+3,090 (+2.4%) since 2020
Land area
1,730
square miles. A further 9.7% of the total area is water
Population density
76.9
people per square mile, computed rather than published
County seat
Mount Vernon
Seat of county government.
Established
1883
142 years ago
Largest city
Mount Vernon city
Population 35,193.

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 Skagit 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 Skagit County, Washington 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 275 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 Skagit County ranks

Position among the 39 counties of Washington, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn WashingtonNationally
Population132,97511th of 39498th of 3,144
Land area1,730 sq mi21st of 39345th of 3,144
Population density76.9 per sq mi14th of 391,110th of 3,144
Median household income$89,26310th of 39319th of 3,143

Full data for Skagit County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population132,975Vintage 2025 Population Estimates
Population in 2020129,885Vintage 2025 Population Estimates
2020 estimates base?129,517Vintage 2025 Population Estimates
Land area1,730 sq mi2025 Gazetteer Files
Water area186.8 sq mi2025 Gazetteer Files
Total area1,917 sq mi2025 Gazetteer Files
Population density?76.9 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$89,263American Community Survey 2020-2024 5-Year Estimates
Median home value$545,100American Community Survey 2020-2024 5-Year Estimates
Median age42.1American Community Survey 2020-2024 5-Year Estimates
Households52,329American Community Survey 2020-2024 5-Year Estimates
Housing units57,050American 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
-70
1,390 births, 1,460 deaths
Net migration
+798
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 6 areas bordering Skagit 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
Whatcom CountyWashington92 mi236,392
Snohomish CountyWashington67 mi870,656
Chelan CountyWashington45 mi81,941
Island CountyWashington18 mi85,657
San Juan CountyWashington18 mi18,577
Okanogan CountyWashington15 mi45,230

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

All 39 counties of Washington

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

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