Cosmopolis
City in Grays Harbor County, Washington

Cosmopolis is a city in Grays Harbor County, Washington, with 1,638 residents (2020 Census). It sits at 26 ft (8 m) above sea level. The nearest town is Aberdeen, 2.3 miles NW.
- 1,638residents (2020 Census)
- 26 ftelevation · 8 m
- 1.4 sq miland area · 3.6 km²
- 1,177 / sq mipopulation density
- 98520ZIP code
About Cosmopolis
Cosmopolis is a city in Grays Harbor County, Washington, United States. The population was 1,638 at the 2020 census. It lies on the Chehalis River and U.S. Route 101, immediately southeast of Aberdeen. Cosmopolis historically had an economy that centered around its pulp mill, which closed in 2006.
Text: Wikipedia · CC BY-SA 4.0
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Living in Cosmopolis
- Median household income
- $84,853
- Median home value
- $317,000
- Median age
- 39.2
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Map of Cosmopolis
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Open in Google Maps ›Cosmopolis, WA population
Cosmopolis had 1,638 residents in the 2020 Census.
| 2020 Census | 1,638 |
|---|---|
| Density | 1,177 per sq mi (454 per km²) |
Source: U.S. Census Bureau, Decennial Census.
Cosmopolis at a glance
| State | Washington (WA) |
|---|---|
| County | Grays Harbor County |
| Type | City |
| Population | 1,638 (2020) |
| Land area | 1.39 sq mi (3.6 km²) |
| Water area | 0.19 sq mi (0.49 km²) |
| Elevation | 26 ft (8 m) |
| Coordinates | 46.9541° N, 123.7732° W |
| ZIP code | 98520 |
| Official website | cosmopoliswa.gov |
| Census code (GEOID) | 5314870 |
Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.
Towns near Cosmopolis
- Aberdeen2.3 mi NW
- Central Park3.5 mi E
- Hoquiam6.6 mi W
- Aberdeen Gardens7.1 mi N
- Montesano9.8 mi NE
- Markham10.5 mi W
- Brady11.4 mi E
- Ocosta13.1 mi W
- Satsop14.5 mi E
- Cohassett Beach16.9 mi W
- Grayland16.9 mi SW
- Westport16.9 mi W
Straight-line distance between town centers.
Frequently asked questions about Cosmopolis
What county is Cosmopolis in?
Cosmopolis is in Grays Harbor County, Washington.
What is the population of Cosmopolis, WA?
1,638 people lived in Cosmopolis at the 2020 Census.
What is the ZIP code of Cosmopolis, WA?
The ZIP code of Cosmopolis is 98520.
What is the elevation of Cosmopolis?
26 feet (8 m) above sea level.
What towns are near Cosmopolis?
Aberdeen (2.3 mi), Central Park (3.5 mi), Hoquiam (6.6 mi), Aberdeen Gardens (7.1 mi), Montesano (9.8 mi).
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