Founded in 1871, Lyon County is one of 87 counties in the state of Minnesota. Historically, Lyon County was formed from Redwood County. The city of Marshall is the county seat. With FIPS code of 83, Lyon County has a population of 25,231 and area of 714.17 square miles (1,850 km2).
List of all cities in Lyon County, MN alphabetically
| City/Town | Postal Code | Area Code |
| Amiret, MN | 56175 | 507 |
| Balaton, MN | 56115 | 507 |
| Cottonwood, MN | 56229 | 507 |
| Garvin, MN | 56132 | 507 |
| Ghent, MN | 56239 | 507 |
| Lynd, MN | 56157 | 507 |
| Marshall, MN | 56258 | 507 |
| Minneota, MN | 56264 | 507 |
| Russell, MN | 56169 | 507 |
| Saint Leo, MN | 56264 | 507 |
| Taunton, MN | 56291 | 507 |
| Tracy, MN | 56175 | 507 |