ZIP code 98537: Cosmopolis, WA
ZIP code 98537 is in Cosmopolis (75% of residents), in Grays Harbor County (94%) and Pacific County (6.3%), Washington. 25% of its residents live outside city limits. It is in Washington's 6th congressional district (94%) and Washington's 3rd congressional district (6.3%). Its state senate district is Legislative (Senate) District 19; its state house district is Legislative (House) District 19.
See it on the mapAll of Washington
City and county
| City or town | Share of ZIP residents |
|---|---|
| Cosmopolis | 75% |
| County | Share of ZIP residents |
|---|---|
| Grays Harbor County | 94% |
| Pacific County | 6.3% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Aberdeen-Hoquiam CCD | 75% |
| North River CCD | 17% |
| Raymond CCD | 6.3% |
| Oakville CCD | 1.0% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Washington's 6th congressional district (WA-06) | 94% |
| Washington's 3rd congressional district (WA-03) | 6.3% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| Legislative (Senate) District 19 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| Legislative (House) District 19 | 100% |
Voting precincts
9 voting precincts overlap ZIP 98537. Map them, with each precinct's share of the ZIP's residents.
Get this in your AI agent
Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:zcta:98537")
ZIP 98537 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.