| Locality | Post Code |
|---|---|
| Acme, Whatcom | 98220 |
| Bakerview, Whatcom | 98226 |
| Bellingham, Whatcom | 98225, 98226, 98227, 98229 |
| Birch Bay, Whatcom | 98230 |
| Blaine, Whatcom | 98230 |
| Chuckanut, Whatcom | 98225 |
| Clearbrook, Whatcom | 98295 |
| Custer, Whatcom | 98240 |
| Deming, Whatcom | 98244 |
| Everson, Whatcom | 98247 |
| Fairhaven, Whatcom | 98225 |
| Ferndale, Whatcom | 98248 |
| Glacier, Whatcom | 98244 |
| Kendall, Whatcom | 98244 |
| Lummi Island, Whatcom | 98262 |
| Lynden, Whatcom | 98264 |
| Maple Falls, Whatcom | 98266 |
| Marietta, Whatcom | 98225 |
| Nooksack, Whatcom | 98276 |
| Nooksack Indian Reservation, Whatcom | 98244 |
| Pleasant Valley, Whatcom | 98248 |
| Point Roberts, Whatcom | 98281 |
| Saxon, Whatcom | 98220 |
| Silver Beach, Whatcom | 98226 |
| Strandell, Whatcom | 98247 |
| Sumas, Whatcom | 98295 |