Preston, IA -- U.S. city in Iowa Population (2000): 949 Housing Units (2000): 433 Land area (2000): 0.986319 sq. miles (2.554555 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.986319 sq. miles (2.554555 sq. km) FIPS code: 64605 Located within: Iowa (IA), FIPS 19 Location: 42.050332 N, 90.394681 W ZIP Codes (1990): 52069 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Preston, IA Preston