De Witt, MI -- U.S. city in Michigan Population (2000): 4702 Housing Units (2000): 1661 Land area (2000): 2.864776 sq. miles (7.419736 sq. km) Water area (2000): 0.108867 sq. miles (0.281964 sq. km) Total area (2000): 2.973643 sq. miles (7.701700 sq. km) FIPS code: 22120 Located within: Michigan (MI), FIPS 26 Location: 42.835983 N, 84.575631 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: De Witt, MI De Witt