| Locality | Post Code |
|---|---|
| Canehill, Washington | 72717 |
| Elkins, Washington | 72727 |
| Elm Springs, Washington | 72728 |
| Evansville, Washington | 72729 |
| Farmington, Washington | 72730 |
| Fayetteville, Washington | 72701, 72703, 72704, 72730, 72764 |
| Goshen, Washington | 72735 |
| Greenland, Washington | 72737 |
| Hindsville, Washington | 72738 |
| Johnson, Washington | 72741 |
| Lincoln, Washington | 72744 |
| Morrow, Washington | 72749 |
| Prairie Grove, Washington | 72753 |
| Springdale, Washington | 72762, 72764 |
| Summers, Washington | 72769 |
| Tontitown, Washington | 72770 |
| West Fork, Washington | 72774 |
| Wheeler, Washington | 72704 |
| Winslow, Washington | 72959 |