Shell Rock, IA -- U.S. city in Iowa Population (2000): 1298 Housing Units (2000): 556 Land area (2000): 1.564001 sq. miles (4.050744 sq. km) Water area (2000): 0.056697 sq. miles (0.146845 sq. km) Total area (2000): 1.620698 sq. miles (4.197589 sq. km) FIPS code: 72435 Located within: Iowa (IA), FIPS 19 Location: 42.711033 N, 92.583471 W ZIP Codes (1990): 50670 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Shell Rock, IA Shell Rock