Steamboat Rock, IA -- U.S. city in Iowa Population (2000): 336 Housing Units (2000): 158 Land area (2000): 0.544005 sq. miles (1.408967 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.544005 sq. miles (1.408967 sq. km) FIPS code: 75180 Located within: Iowa (IA), FIPS 19 Location: 42.407607 N, 93.066276 W ZIP Codes (1990): 50672 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Steamboat Rock, IA Steamboat Rock