8 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 99362 | Walla Walla | 42,853 |
| 99324 | College Place | 10,137 |
| 99323 | Burbank | 4,082 |
| 99361 | Waitsburg | 1,992 |
| 99348 | Prescott | 1,633 |
| 99360 | Touchet | 1,350 |
| 99363 | Wallula | 145 |
| 99329 | Dixie | 127 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 8 ZCTAs in Walla Walla County, Washington (US Census).