12 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 56001 | Mankato | 51,585 |
| 56055 | Lake Crystal | 3,898 |
| 56024 | Eagle Lake | 3,647 |
| 56063 | Madison Lake | 3,221 |
| 56065 | Mapleton | 2,766 |
| 56037 | Good Thunder | 1,374 |
| 56010 | Amboy | 1,159 |
| 56068 | Minnesota Lake | 1,041 |
| 56080 | Saint Clair | 672 |
| 56090 | Vernon Center | 596 |
| 56078 | Pemberton | 451 |
| 56034 | Garden City | 393 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 12 ZCTAs in Blue Earth County, Minnesota (US Census).