| Locality | Post Code |
|---|---|
| Sumach, Yakima | 98901, 98903 |
| Sunnyside, Yakima | 98944 |
| Tampico, Yakima | 98902 |
| Tieton, Yakima | 98947 |
| Toppenish, Yakima | 98948 |
| Union Gap, Yakima | 98901, 98903 |
| Wapato, Yakima | 98951 |
| Weikel, Yakima | 98902 |
| West Side, Yakima | 98902 |
| White Pass, Yakima | 98937 |
| White Swan, Yakima | 98952 |
| Yakima, Yakima | 98901, 98902, 98903, 98908 |
| Zillah, Yakima | 98953 |