| City/Town | Postal Code | Area Code |
| Almira, WA | 99103 | 509 |
| Creston, WA | 99117 | 509 |
| Creston, WA | 99147 | 509 |
| Davenport, WA | 99122 | 509 |
| Deer Meadows, WA | 99122 | 509 |
| Edwall, WA | 99008 | 509 |
| Harrington, WA | 99134 | 509 |
| Harrington, WA | 99154 | 509 |
| Lamona, WA | 99144 | 509 |
| Lincoln, WA | 99147 | 509 |
| Mohler, WA | 99154 | 509 |
| Odessa, WA | 99144 | 509 |
| Odessa, WA | 99159 | 509 |
| Reardan, WA | 99029 | 509 |
| Seven Bays, WA | 99122 | 509 |
| Sprague, WA | 99032 | 509 |
| Wilbur, WA | 99185 |
509
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