Dawson, IA -- U.S. city in Iowa Population (2000): 155 Housing Units (2000): 67 Land area (2000): 0.478070 sq. miles (1.238196 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.478070 sq. miles (1.238196 sq. km) FIPS code: 19135 Located within: Iowa (IA), FIPS 19 Location: 41.843698 N, 94.221335 W ZIP Codes (1990): 50066 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Dawson, IA Dawson