| Locality | Post Code |
|---|---|
| Bartlesville, Washington | 74003, 74006 |
| Collinsville, Washington | 74021 |
| Copan, Washington | 74022 |
| Dewey, Washington | 74029 |
| Eastside, Washington | 74006 |
| Glenoak, Washington | 74003 |
| Hog Shooter, Washington | 74003 |
| Ochelata, Washington | 74051 |
| Okesa, Washington | 74003 |
| Ramona, Washington | 74061 |
| Skiatook, Washington | 74070 |
| Vera, Washington | 74082 |