Lyon County is a county located in the state of Minnesota. Based on the 2010 census, the population was 25,857. Its county seat is
Marshall.
Lyon County comprises the Marshall, MN Micropolitan Statistical Area.
Named for General Nathaniel Lyon who worked against secession in Missouri; served in frontier duty with Army in Minnesota and Dakota territory, 1853-61; killed in Civil War at battle of Wilson's Creek, Missouri, 1861.
County QuickFacts: CensusBureau Quick Facts
Lyon County was created on November 2, 1869 (Organized in 1870, Deorganized in 1873 the Reorganized in 1875) from Redwood County. The county was named in honor of General Nathaniel Lyon (1818-1861) who worked against secession in Missouri; served in frontier duty with Army in Minnesota and Dakota territory, 1853-61; killed in Civil War at battle of Wilson's Creek, Missouri, 1861. The County Seat is located in Marshall and the county government
As reported by the Census Bureau, the county has a total area of 722 square miles (1,870 km2), of which 715 square miles (1,850 km2) is land and 7.1 square miles (18 km2) (1.0%) is water.
Bordering counties are as follows: