Founded in 1860, Watonwan County is one of 87 counties in the state of Minnesota. Historically, Watonwan County was formed from Brown County. The city of St. James is the county seat. With FIPS code of 165, Watonwan County has a population of 11,135 and area of 434.51 square miles (1,125 km2).
List of all cities in Watonwan County, MN alphabetically
| City/Town | Postal Code | Area Code |
| Butterfield, MN | 56120 | 507 |
| Darfur, MN | 56022 | 507 |
| La Salle, MN | 56056 | 507 |
| Lewisville, MN | 56060 | 507 |
| Madelia, MN | 56062 | 507 |
| Odin, MN | 56160 | 507 |
| Saint James, MN | 56081 | 507 |