Martin County, Minnesota
| Martin County | |
|---|---|
| Martin County Courthouse in Fairmont | |
| Location within the U.S. state of Minnesota | |
| Minnesota's location within the U.S. | |
| Coordinates: 43°41′N 94°34′W / 43.68°N 94.56°W | |
| Country | United States | 
| State | Minnesota | 
| Founded | May 23, 1857 | 
| Named after | Henry Martin | 
| Seat | Fairmont | 
| Largest city | Fairmont | 
| Area | |
|  • Total | 730 sq mi (1,900 km2) | 
| • Land | 712 sq mi (1,840 km2) | 
| • Water | 17 sq mi (40 km2) 2.4% | 
| Population  (2020) | |
|  • Total | 20,025 | 
|  • Estimate  (2023) | 19,657 | 
| • Density | 27/sq mi (11/km2) | 
| Time zone | UTC−6 (Central) | 
| • Summer (DST) | UTC−5 (CDT) | 
| Congressional district | 1st | 
| Website | www | 
Martin County is a county in Minnesota, United States. As of the 2020 census, the population was 20,025. Its county seat is Fairmont.