Marshall, MI -- U.S. city in Michigan Population (2000): 7459 Housing Units (2000): 3353 Land area (2000): 5.916686 sq. miles (15.324147 sq. km) Water area (2000): 0.176123 sq. miles (0.456156 sq. km) Total area (2000): 6.092809 sq. miles (15.780303 sq. km) FIPS code: 51940 Located within: Michigan (MI), FIPS 26 Location: 42.270467 N, 84.960050 W ZIP Codes (1990): 49068 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Marshall, MI Marshall