Riverside, MO -- U.S. city in Missouri Population (2000): 2979 Housing Units (2000): 1384 Land area (2000): 5.327436 sq. miles (13.797996 sq. km) Water area (2000): 0.340535 sq. miles (0.881982 sq. km) Total area (2000): 5.667971 sq. miles (14.679978 sq. km) FIPS code: 62156 Located within: Missouri (MO), FIPS 29 Location: 39.174903 N, 94.622414 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Riverside, MO Riverside