Garnavillo, IA -- U.S. city in Iowa Population (2000): 754 Housing Units (2000): 357 Land area (2000): 0.878500 sq. miles (2.275304 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.878500 sq. miles (2.275304 sq. km) FIPS code: 29910 Located within: Iowa (IA), FIPS 19 Location: 42.866978 N, 91.236087 W ZIP Codes (1990): 52049 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Garnavillo, IA Garnavillo