Carter -- U.S. County in Oklahoma Population (2000): 45621 Housing Units (2000): 20577 Land area (2000): 823.790732 sq. miles (2133.608110 sq. km) Water area (2000): 9.925211 sq. miles (25.706177 sq. km) Total area (2000): 833.715943 sq. miles (2159.314287 sq. km) Located within: Oklahoma (OK), FIPS 40 Location: 34.214754 N, 97.220100 W Headwords: Carter Carter, OK Carter County Carter County, OK