| Locality | Post Code |
|---|---|
| Amherst, Marshall | 57421 |
| Britton, Marshall | 57430 |
| Eden, Marshall | 57232 |
| Hillhead, Marshall | 57270 |
| Kidder, Marshall | 57430 |
| Lake City, Marshall | 57247 |
| Langford, Marshall | 57454 |
| Newark, Marshall | 57430 |
| Red Iron Lake, Marshall | 57247 |
| Spain, Marshall | 57430 |
| Sunset Colony, Marshall | 57430 |
| Veblen, Marshall | 57270 |