Lyon County, Minnesota
| Lyon County | |
|---|---|
| Student Center at Southwest Minnesota State University. | |
| Location within the U.S. state of Minnesota | |
| Minnesota's location within the U.S. | |
| Coordinates: 44°25′N 95°50′W / 44.41°N 95.84°W | |
| Country | United States | 
| State | Minnesota | 
| Founded | March 6, 1868 March 2, 1869 | 
| Named after | Nathaniel Lyon | 
| Seat | Marshall | 
| Largest city | Marshall | 
| Area | |
|  • Total | 722 sq mi (1,870 km2) | 
| • Land | 715 sq mi (1,850 km2) | 
| • Water | 7.1 sq mi (18 km2) 1.0% | 
| Population  (2020) | |
|  • Total | 25,269 | 
|  • Estimate  (2023) | 25,427 | 
| • Density | 35.3/sq mi (13.6/km2) | 
| Time zone | UTC−6 (Central) | 
| • Summer (DST) | UTC−5 (CDT) | 
| Congressional district | 7th | 
| Website | www | 
Lyon County is a county in the U.S. state of Minnesota. As of the 2020 census, the population was 25,269. Its county seat is Marshall.
Lyon County comprises the Marshall, MN Micropolitan Statistical Area.