Cosmopolis Washington ZIP Codes
Cosmopolis holds a single ZIP code.
Every ZIP code in Cosmopolis
| ZIP code | County |
|---|---|
| 98537 | Grays Harbor County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Cosmopolis codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Cosmopolis. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Cosmopolis ZIP code begins 985. Those first three digits identify the sectional center facility that processes mail for this part of Washington. Statewide that range covers 77 ZIP codes, so Cosmopolis accounts for 1% of it.
Every Washington ZIP prefix and the region it covers →
Area codes covering Cosmopolis
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Cosmopolis occupies.
Cosmopolis Washington area codes in full →
Where Cosmopolis's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Cosmopolis
| City | Distance | ZIP codes |
|---|---|---|
| Aberdeen Washington ZIP codes | 2.3 mi | 1 ZIP code |
| Hoquiam Washington ZIP codes | 6.6 mi | 1 ZIP code |
| Montesano Washington ZIP codes | 9.8 mi | 1 ZIP code |
| Westport Washington ZIP codes | 17 mi | 1 ZIP code |
| Elma Washington ZIP codes | 17 mi | 1 ZIP code |
| Ocean Shores Washington ZIP codes | 18 mi | 1 ZIP code |
| Raymond Washington ZIP codes | 19 mi | 1 ZIP code |
| South Bend Washington ZIP codes | 20 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.