Marshall, MO -- U.S. city in Missouri Population (2000): 12433 Housing Units (2000): 5127 Land area (2000): 10.146161 sq. miles (26.278436 sq. km) Water area (2000): 0.075778 sq. miles (0.196265 sq. km) Total area (2000): 10.221939 sq. miles (26.474701 sq. km) FIPS code: 46316 Located within: Missouri (MO), FIPS 29 Location: 39.116210 N, 93.197854 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Marshall, MO Marshall