Clayton, OK -- U.S. town in Oklahoma Population (2000): 719 Housing Units (2000): 404 Land area (2000): 1.695675 sq. miles (4.391778 sq. km) Water area (2000): 0.010914 sq. miles (0.028268 sq. km) Total area (2000): 1.706589 sq. miles (4.420046 sq. km) FIPS code: 14900 Located within: Oklahoma (OK), FIPS 40 Location: 34.587698 N, 95.357077 W ZIP Codes (1990): 74536 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Clayton, OK Clayton