Ludington, MI -- U.S. city in Michigan Population (2000): 8357 Housing Units (2000): 4227 Land area (2000): 3.366746 sq. miles (8.719831 sq. km) Water area (2000): 0.326766 sq. miles (0.846319 sq. km) Total area (2000): 3.693512 sq. miles (9.566150 sq. km) FIPS code: 49640 Located within: Michigan (MI), FIPS 26 Location: 43.957074 N, 86.444482 W ZIP Codes (1990): 49431 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Ludington, MI Ludington