Marshall -- U.S. County in West Virginia Population (2000): 35519 Housing Units (2000): 15814 Land area (2000): 306.994195 sq. miles (795.111280 sq. km) Water area (2000): 5.189308 sq. miles (13.440246 sq. km) Total area (2000): 312.183503 sq. miles (808.551526 sq. km) Located within: West Virginia (WV), FIPS 54 Location: 39.907446 N, 80.712893 W Headwords: Marshall Marshall, WV Marshall County Marshall County, WV