Troy, MI -- U.S. city in Michigan Population (2000): 80959 Housing Units (2000): 30872 Land area (2000): 33.538805 sq. miles (86.865102 sq. km) Water area (2000): 0.101965 sq. miles (0.264088 sq. km) Total area (2000): 33.640770 sq. miles (87.129190 sq. km) FIPS code: 80700 Located within: Michigan (MI), FIPS 26 Location: 42.580141 N, 83.142980 W ZIP Codes (1990): 48083 48084 48098 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Troy, MI Troy