Riverdale, UT -- U.S. city in Utah Population (2000): 7656 Housing Units (2000): 2970 Land area (2000): 4.435482 sq. miles (11.487846 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 4.435482 sq. miles (11.487846 sq. km) FIPS code: 64010 Located within: Utah (UT), FIPS 49 Location: 41.178664 N, 112.004136 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Riverdale, UT Riverdale