Cosmopolis city, Washington
Official LSAD Designation: Cosmopolis city • Census GEOID: 5314870
• Grays Harbor County
Cosmopolis city is an incorporated city in Grays Harbor County, Washington. According to official records from the Census (2025), Cosmopolis city had an estimated population of 1,656 residents. Official Census Bureau geographic records classify this community under LSAD designation Cosmopolis city (GEOID 5314870).
Local Government Administration U.S. Census Bureau GMAF
City Of Cosmopolis
Municipal
Official Title:
Deputy Clerk
Address:
PO BOX 2007, COSMOPOLIS WA 98537-2007
County Of Grays Harbor
County
Official Title:
Chairman Of Commission
Address:
100 W BROADWAY AVE, STE 1, MONTESANO WA 98563-3614
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 1,656 | 2025 |
| Median Household Income | $84,853 | 2020-2024 |
| Median Home Value | $317,000 | 2020-2024 |
| Land Area | 1.39 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).