| ZIP Code | ZIP Code Place Name | County | ZIP Code Type |
|---|---|---|---|
| 98220 | Acme | Whatcom County | Standard |
| 98225 | Bellingham | Whatcom County | Standard |
| 98226 | Bellingham | Whatcom County | Standard |
| 98227 | Bellingham | Whatcom County | PO Box |
| 98228 | Bellingham | Whatcom County | PO Box |
| 98229 | Bellingham | Whatcom County | Standard |
| 98230 | Blaine | Whatcom County | Standard |
| 98231 | Blaine | Whatcom County | PO Box |
| 98237 | Concrete | Skagit County | Standard |
| 98240 | Custer | Whatcom County | Standard |
| 98244 | Deming | Whatcom County | Standard |
| 98247 | Everson | Whatcom County | Standard |
| 98248 | Ferndale | Whatcom County | Standard |
| 98262 | Lummi Island | Whatcom County | Standard |
| 98264 | Lynden | Whatcom County | Standard |
| 98266 | Maple Falls | Whatcom County | Standard |
| 98267 | Marblemount | Skagit County | Standard |
| 98276 | Nooksack | Whatcom County | Standard |
| 98281 | Point Roberts | Whatcom County | Standard |
| 98283 | Rockport | Skagit County | Standard |
| 98284 | Sedro Woolley | Skagit County | Standard |
| 98295 | Sumas | Whatcom County | Standard |