Marshall -- U.S. County in Alabama Population (2000): 82231 Housing Units (2000): 36331 Land area (2000): 567.059769 sq. miles (1468.677998 sq. km) Water area (2000): 56.101981 sq. miles (145.303458 sq. km) Total area (2000): 623.161750 sq. miles (1613.981456 sq. km) Located within: Alabama (AL), FIPS 01 Location: 34.329598 N, 86.288884 W Headwords: Marshall Marshall, AL Marshall County Marshall County, AL