Garwin, IA -- U.S. city in Iowa Population (2000): 565 Housing Units (2000): 248 Land area (2000): 1.001706 sq. miles (2.594407 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 1.001706 sq. miles (2.594407 sq. km) FIPS code: 30045 Located within: Iowa (IA), FIPS 19 Location: 42.094635 N, 92.676653 W ZIP Codes (1990): 50632 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Garwin, IA Garwin