Founded in 1853, Nicollet County is one of 87 counties in the state of Minnesota. Historically, Nicollet County was formed from Dakota County. The city of St. Peter is the county seat. With FIPS code of 103, Nicollet County has a population of 34,332 and area of 452.29 square miles (1,171 km2).
List of all cities in Nicollet County, MN alphabetically
| City/Town | Postal Code | Area Code |
| Courtland, MN | 56021 | 507 |
| La Fayette, MN | 56054 | 507 |
| Mankato, MN | 56003 | 507 |
| Nicollet, MN | 56074 | 507 |
| North Mankato, MN | 56003 | 507 |
| Saint Peter, MN | 56082 | 507 |