| Locality | Post Code |
|---|---|
| Bay Center, Pacific | 98527 |
| Chinook, Pacific | 98614 |
| Firdale, Pacific | 98577 |
| Frances, Pacific | 98577 |
| Holcomb, Pacific | 98577 |
| Ilwaco, Pacific | 98624 |
| Lebam, Pacific | 98554 |
| Long Beach, Pacific | 98631 |
| Menlo, Pacific | 98561 |
| Nahcotta, Pacific | 98637 |
| Naselle, Pacific | 98638 |
| Nemah, Pacific | 98586 |
| North Cove, Pacific | 98590 |
| Ocean Park, Pacific | 98640 |
| Oceanside, Pacific | 98631 |
| Old Willapa, Pacific | 98577 |
| Oysterville, Pacific | 98641 |
| Raymond, Pacific | 98577 |
| Seaview, Pacific | 98644 |
| South Bend, Pacific | 98586 |
| Tokeland, Pacific | 98590 |
| Willapa, Pacific | 98577 |