| City/Town | Postal Code | Area Code |
| Benge, WA | 99105 | 509 |
| Hatton, WA | 99344 | 509 |
| Lind, WA | 99341 | 509 |
| Othello, WA | 99344 | 509 |
| Ritzville, WA | 99169 | 509 |
| Royal Slope, WA | 99344 | 509 |
| Washtucna, WA | 99371 | 509 |
List of all Cities and Towns in Adams County, WA alphabetically