| Locality | Post Code |
|---|---|
| Burbank, Walla Walla | 99323 |
| College Place, Walla Walla | 99324 |
| Dixie, Walla Walla | 99329 |
| Lowden, Walla Walla | 99360 |
| Prescott, Walla Walla | 99348 |
| Touchet, Walla Walla | 99360 |
| Waitsburg, Walla Walla | 99361 |
| Walla Walla, Walla Walla | 99362 |
| Wallula, Walla Walla | 99363 |