Rock -- U.S. County in Minnesota Population (2000): 9721 Housing Units (2000): 4137 Land area (2000): 482.609501 sq. miles (1249.952815 sq. km) Water area (2000): 0.233498 sq. miles (0.604756 sq. km) Total area (2000): 482.842999 sq. miles (1250.557571 sq. km) Located within: Minnesota (MN), FIPS 27 Location: 43.667243 N, 96.242131 W Headwords: Rock Rock, MN Rock County Rock County, MN