Promise City, IA -- U.S. city in Iowa Population (2000): 105 Housing Units (2000): 64 Land area (2000): 0.186954 sq. miles (0.484209 sq. km) Water area (2000): 0.002051 sq. miles (0.005313 sq. km) Total area (2000): 0.189005 sq. miles (0.489522 sq. km) FIPS code: 64875 Located within: Iowa (IA), FIPS 19 Location: 40.746955 N, 93.148953 W ZIP Codes (1990): 52583 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Promise City, IA Promise City