Oakville, IA -- U.S. city in Iowa Population (2000): 439 Housing Units (2000): 193 Land area (2000): 0.420170 sq. miles (1.088236 sq. km) Water area (2000): 0.004939 sq. miles (0.012792 sq. km) Total area (2000): 0.425109 sq. miles (1.101028 sq. km) FIPS code: 58395 Located within: Iowa (IA), FIPS 19 Location: 41.097853 N, 91.043625 W ZIP Codes (1990): 52646 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Oakville, IA Oakville