City · Washington · United States
Rock Island, WA — ZIP codes
1 ZIP code · Douglas County
- City
- Rock Island
- County
- Douglas
- State
- Washington
- Country
- United States
- Postal code
- 98850Single source
- Coordinates
- 47.3706, -120.1378 View on OpenStreetMap
ZIP codes (1)
| Postal code | Place name | Verification |
|---|---|---|
| 98850 | Rock Island | Single source |
Sources and verification
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames. Last generated : 2026-08-21. Report an error.