6 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 56081 | Saint James | 6,092 |
| 56062 | Madelia | 3,249 |
| 56120 | Butterfield | 925 |
| 56060 | Lewisville | 446 |
| 56022 | Darfur | 100 |
| 56056 | La Salle | 60 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 6 ZCTAs in Watonwan County, Minnesota (US Census).