Shelby -- U.S. County in Missouri Population (2000): 6799 Housing Units (2000): 3245 Land area (2000): 500.934790 sq. miles (1297.415094 sq. km) Water area (2000): 1.494690 sq. miles (3.871228 sq. km) Total area (2000): 502.429480 sq. miles (1301.286322 sq. km) Located within: Missouri (MO), FIPS 29 Location: 39.774758 N, 92.085447 W Headwords: Shelby Shelby, MO Shelby County Shelby County, MO