| Locality | Post Code |
|---|---|
| Belgrade, Washington | 63622 |
| Bismarck, Washington | 63624 |
| Blackwell, Washington | 63626 |
| Cadet, Washington | 63630 |
| Caledonia, Washington | 63631 |
| Fletcher, Washington | 63030 |
| Hopewell, Washington | 63660 |
| Irondale, Washington | 63648 |
| Mineral Point, Washington | 63660 |
| Old Mines, Washington | 63630 |
| Potosi, Washington | 63664 |
| Richwoods, Washington | 63071 |
| Springtown, Washington | 63660 |
| Stoney Point, Washington | 63660 |
| Sullivan, Washington | 63080 |
| Tiff, Washington | 63674 |