Hayden, ID -- U.S. city in Idaho Population (2000): 9159 Housing Units (2000): 3714 Land area (2000): 7.845294 sq. miles (20.319218 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 7.845294 sq. miles (20.319218 sq. km) FIPS code: 36370 Located within: Idaho (ID), FIPS 16 Location: 47.757112 N, 116.788877 W ZIP Codes (1990): Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Hayden, ID Hayden