| Localité | Code postal |
|---|---|
| Buffalo, Harding | 57720 |
| Camp Crook, Harding | 57724 |
| Gustave, Harding | 57724 |
| Ludlow, Harding | 57755 |
| Olson, Harding | 57755 |
| Ralph, Harding | 57650 |
| Redig, Harding | 57776 |
| Reva, Harding | 57651 |
| Sky Ranch, Harding | 57724 |
| Wilson Corner, Harding | 57755 |