Okoboji, IA -- U.S. city in Iowa Population (2000): 820 Housing Units (2000): 944 Land area (2000): 1.782558 sq. miles (4.616805 sq. km) Water area (2000): 0.003395 sq. miles (0.008792 sq. km) Total area (2000): 1.785953 sq. miles (4.625597 sq. km) FIPS code: 58710 Located within: Iowa (IA), FIPS 19 Location: 43.387620 N, 95.138025 W ZIP Codes (1990): 51355 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Okoboji, IA Okoboji