| Locality | Post Code |
|---|---|
| Bingham Lake, Cottonwood | 56118 |
| Delft, Cottonwood | 56101 |
| Dovray, Cottonwood | 56183 |
| Jeffers, Cottonwood | 56145 |
| Mountain Lake, Cottonwood | 56159 |
| Storden, Cottonwood | 56174 |
| Westbrook, Cottonwood | 56183 |
| Wilder, Cottonwood | 56101 |
| Windom, Cottonwood | 56101 |