| 98233 Alger | 360/564 | Skagit County | Washington (WA) |
| 98232 Allen | 360/564 | Skagit County | Washington (WA) |
| 98221 Anacortes | 360/564 | Skagit County | Washington (WA) |
| 98232 Bow | 360/564 | Skagit County | Washington (WA) |
| 98233 Burlington | 360/564 | Skagit County | Washington (WA) |
| 98235 Clearlake | 360/564 | Skagit County | Washington (WA) |
| 98237 Concrete | 360/564 | Skagit County | Washington (WA) |
| 98238 Conway | 360/564 | Skagit County | Washington (WA) |
| 98221 Decatur Island | 360/564 | Skagit County | Washington (WA) |
| 98283 Diablo | 360/564 | Skagit County | Washington (WA) |
| 98232 Edison | 360/564 | Skagit County | Washington (WA) |
| 98221 Guemes | 360/564 | Skagit County | Washington (WA) |
| 98221 Guemes Island | 360/564 | Skagit County | Washington (WA) |
| 98255 Hamilton | 360/564 | Skagit County | Washington (WA) |
| 98257 La Conner | 360/564 | Skagit County | Washington (WA) |
| 98263 Lyman | 360/564 | Skagit County | Washington (WA) |
| 98267 Marblemount | 360/564 | Skagit County | Washington (WA) |
| 98273 Mount Vernon | 360/564 | Skagit County | Washington (WA) |
| 98274 Mount Vernon | 360/564 | Skagit County | Washington (WA) |
| 98283 Newhalem | 360/564 | Skagit County | Washington (WA) |
| 98283 Rockport | 360/564 | Skagit County | Washington (WA) |
| 98232 Samish Island | 360/564 | Skagit County | Washington (WA) |
| 98284 Sedro Woolley | 360/564 | Skagit County | Washington (WA) |
| 98221 Similk Beach | 360/564 | Skagit County | Washington (WA) |
| 98233 Upper Skagit Indian Reservat | 360/564 | Skagit County | Washington (WA) |