St. Ignace, MI -- U.S. city in Michigan Population (2000): 2678 Housing Units (2000): 1232 Land area (2000): 2.703084 sq. miles (7.000955 sq. km) Water area (2000): 0.008865 sq. miles (0.022961 sq. km) Total area (2000): 2.711949 sq. miles (7.023916 sq. km) FIPS code: 70840 Located within: Michigan (MI), FIPS 26 Location: 45.865863 N, 84.725952 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: St. Ignace, MI St. Ignace