Founded in 1857, Martin County is one of 87 counties in the state of Minnesota. Historically, Martin County was formed from Faribault County, Brown County. The city of Fairmont is the county seat. With FIPS code of 91, Martin County has a population of 19,915 and area of 709.34 square miles (1,837 km2).
List of all cities in Martin County, MN alphabetically
| City/Town | Postal Code | Area Code |
| Ceylon, MN | 56121 | 507 |
| Dunnell, MN | 56127 | 507 |
| Fairmont, MN | 56031 | 507 |
| 56075 | 507 | |
| Granada, MN | 56039 | 507 |
| Northrop, MN | 56075 | 507 |
| Ormsby, MN | 56162 | 507 |
| Sherburn, MN | 56171 | 507 |
| Trimont, MN | 56176 | 507 |
| Truman, MN | 56088 | 507 |
| Welcome, MN | 56181 | 507 |