Lyon -- U.S. County in Minnesota Population (2000): 25425 Housing Units (2000): 10298 Land area (2000): 714.173892 sq. miles (1849.701810 sq. km) Water area (2000): 7.286743 sq. miles (18.872576 sq. km) Total area (2000): 721.460635 sq. miles (1868.574386 sq. km) Located within: Minnesota (MN), FIPS 27 Location: 44.412380 N, 95.825676 W Headwords: Lyon Lyon, MN Lyon County Lyon County, MN