Dayton, ID -- U.S. city in Idaho Population (2000): 444 Housing Units (2000): 133 Land area (2000): 6.589861 sq. miles (17.067660 sq. km) Water area (2000): 0.024857 sq. miles (0.064380 sq. km) Total area (2000): 6.614718 sq. miles (17.132040 sq. km) FIPS code: 20710 Located within: Idaho (ID), FIPS 16 Location: 42.111615 N, 111.985136 W ZIP Codes (1990): 83232 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Dayton, ID Dayton