Marion -- U.S. County in West Virginia Population (2000): 56598 Housing Units (2000): 26660 Land area (2000): 309.691034 sq. miles (802.096062 sq. km) Water area (2000): 1.803059 sq. miles (4.669902 sq. km) Total area (2000): 311.494093 sq. miles (806.765964 sq. km) Located within: West Virginia (WV), FIPS 54 Location: 39.499846 N, 80.197936 W Headwords: Marion Marion, WV Marion County Marion County, WV