Cotton -- U.S. County in Oklahoma Population (2000): 6614 Housing Units (2000): 3085 Land area (2000): 636.638532 sq. miles (1648.886159 sq. km) Water area (2000): 5.305494 sq. miles (13.741165 sq. km) Total area (2000): 641.944026 sq. miles (1662.627324 sq. km) Located within: Oklahoma (OK), FIPS 40 Location: 34.296951 N, 98.356706 W Headwords: Cotton Cotton, OK Cotton County Cotton County, OK