Ithaca, MI -- U.S. city in Michigan Population (2000): 3098 Housing Units (2000): 1289 Land area (2000): 4.076685 sq. miles (10.558564 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 4.076685 sq. miles (10.558564 sq. km) FIPS code: 41340 Located within: Michigan (MI), FIPS 26 Location: 43.291051 N, 84.603113 W ZIP Codes (1990): 48847 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Ithaca, MI Ithaca