Clayton, ID -- U.S. city in Idaho Population (2000): 27 Housing Units (2000): 23 Land area (2000): 0.012825 sq. miles (0.033217 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 0.012825 sq. miles (0.033217 sq. km) FIPS code: 15490 Located within: Idaho (ID), FIPS 16 Location: 44.259014 N, 114.399725 W ZIP Codes (1990): 83227 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Clayton, ID Clayton