| City/Town | Postal Code | Area Code |
| Burbank, WA | 99323 | 509 |
| College Place, WA | 99324 | 509 |
| Dixie, WA | 99329 | 509 |
| Lowden, WA | 99360 | 509 |
| Prescott, WA | 99348 | 509 |
| Touchet, WA | 99360 | 509 |
| Waitsburg, WA | 99361 | 509 |
| Walla Walla, WA | 99362 | 509 |
| Wallula, WA | 99363 | 509 |
List of all Cities and Towns in Walla Walla County, WA alphabetically