| Locality | Post Code |
|---|---|
| Amboy, Blue Earth | 56010 |
| Eagle Lake, Blue Earth | 56024 |
| Garden City, Blue Earth | 56034 |
| Good Thunder, Blue Earth | 56037 |
| Lake Crystal, Blue Earth | 56055 |
| Madison Lake, Blue Earth | 56063 |
| Mankato, Blue Earth | 56001 |
| Mapleton, Blue Earth | 56065 |
| North Mankato, Blue Earth | 56002 |
| Pemberton, Blue Earth | 56078 |
| Saint Clair, Blue Earth | 56080 |
| Skyline, Blue Earth | 56001 |
| Vernon Center, Blue Earth | 56090 |