Blockton, IA -- U.S. city in Iowa Population (2000): 192 Housing Units (2000): 112 Land area (2000): 0.647057 sq. miles (1.675869 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.647057 sq. miles (1.675869 sq. km) FIPS code: 06985 Located within: Iowa (IA), FIPS 19 Location: 40.615851 N, 94.476654 W ZIP Codes (1990): 50836 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Blockton, IA Blockton