Boyden, IA -- U.S. city in Iowa Population (2000): 672 Housing Units (2000): 285 Land area (2000): 0.347656 sq. miles (0.900424 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.347656 sq. miles (0.900424 sq. km) FIPS code: 07840 Located within: Iowa (IA), FIPS 19 Location: 43.190221 N, 96.003698 W ZIP Codes (1990): 51234 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Boyden, IA Boyden