| Locality | Post Code |
|---|---|
| Averill, Clay | 56547 |
| Baker, Clay | 56580 |
| Barnesville, Clay | 56514 |
| Comstock, Clay | 56525 |
| Dale, Clay | 56549 |
| Dilworth, Clay | 56529 |
| Downer, Clay | 56514 |
| Felton, Clay | 56536 |
| Georgetown, Clay | 56546 |
| Glyndon, Clay | 56547 |
| Hawley, Clay | 56549 |
| Hitterdal, Clay | 56552 |
| Kragnes, Clay | 56560 |
| Moorhead, Clay | 56547, 56560, 56562, 56563 |
| Rollag, Clay | 56549 |
| Sabin, Clay | 56580 |
| Ulen, Clay | 56585 |