County Maps US

Grays Harbor County, Washington

A county in Washington, ranked 19 of 39 by population.

CountyFIPS 53027

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

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Population
78,144
+2,278 (+3.0%) since 2020
Land area
1,902
square miles. A further 14.5% of the total area is water
Population density
41.1
people per square mile, computed rather than published
County seat
Montesano
Seat of county government.
Established
1854
171 years ago
Largest city
Aberdeen city
Population 17,088.

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 Grays Harbor 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 Grays Harbor 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 738 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 Grays Harbor 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
Population78,14419th of 39740th of 3,144
Land area1,902 sq mi15th of 39301st of 3,144
Population density41.1 per sq mi19th of 391,648th of 3,144
Median household income$64,41435th of 391,678th of 3,143

Full data for Grays Harbor County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population78,144Vintage 2025 Population Estimates
Population in 202075,866Vintage 2025 Population Estimates
2020 estimates base?75,635Vintage 2025 Population Estimates
Land area1,902 sq mi2025 Gazetteer Files
Water area321.3 sq mi2025 Gazetteer Files
Total area2,224 sq mi2025 Gazetteer Files
Population density?41.1 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$64,414American Community Survey 2020-2024 5-Year Estimates
Median home value$314,000American Community Survey 2020-2024 5-Year Estimates
Median age44.7American Community Survey 2020-2024 5-Year Estimates
Households30,628American Community Survey 2020-2024 5-Year Estimates
Housing units36,967American 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
-364
683 births, 1,047 deaths
Net migration
+488
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 Grays Harbor 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
Jefferson CountyWashington44 mi33,970
Mason CountyWashington44 mi71,165
Pacific CountyWashington38 mi24,357
Thurston CountyWashington22 mi304,261
Lewis CountyWashington10 mi88,062

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.