County Maps US

Clatsop County, Oregon

A county in Oregon, ranked 19 of 36 by population.

CountyFIPS 41007

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

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Population
40,926
-230 (-0.6%) since 2020
Land area
828.2
square miles. A further 23.6% of the total area is water
Population density
49.4
people per square mile, computed rather than published
County seat
Astoria
Seat of county government.
Established
1844
181 years ago
Largest city
Astoria city
Population 9,838.

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 Clatsop 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 Clatsop County, Oregon 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 734 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 Clatsop County ranks

Position among the 36 counties of Oregon, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn OregonNationally
Population40,92619th of 361,175th of 3,144
Land area828.2 sq mi28th of 361,019th of 3,144
Population density49.4 per sq mi15th of 361,484th of 3,144
Median household income$71,82216th of 361,060th of 3,143

Full data for Clatsop County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population40,926Vintage 2025 Population Estimates
Population in 202041,156Vintage 2025 Population Estimates
2020 estimates base?41,073Vintage 2025 Population Estimates
Land area828.2 sq mi2025 Gazetteer Files
Water area255.4 sq mi2025 Gazetteer Files
Total area1,084 sq mi2025 Gazetteer Files
Population density?49.4 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$71,822American Community Survey 2020-2024 5-Year Estimates
Median home value$468,300American Community Survey 2020-2024 5-Year Estimates
Median age46.0American Community Survey 2020-2024 5-Year Estimates
Households17,984American Community Survey 2020-2024 5-Year Estimates
Housing units23,395American 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
-170
279 births, 449 deaths
Net migration
-106
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 Clatsop 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
Tillamook CountyOregon35 mi27,384
Columbia CountyOregon26 mi54,091
Pacific CountyWashington26 mi24,357
Wahkiakum CountyWashington24 mi4,873
Washington CountyOregona single point611,708

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

All 36 counties of Oregon

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

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