Riverside, IA -- U.S. city in Iowa Population (2000): 928 Housing Units (2000): 396 Land area (2000): 1.006909 sq. miles (2.607882 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.006909 sq. miles (2.607882 sq. km) FIPS code: 67440 Located within: Iowa (IA), FIPS 19 Location: 41.481891 N, 91.576631 W ZIP Codes (1990): 52327 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Riverside, IA Riverside