6 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 56081 | Saint James | 6,172 |
| 56062 | Madelia | 3,234 |
| 56120 | Butterfield | 983 |
| 56060 | Lewisville | 400 |
| 56022 | Darfur | 63 |
| 56056 | La Salle | 55 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 6 ZCTAs in Watonwan County, Minnesota (US Census).