South Carolina Congressional Districts, 1962 to 1970
The 1966 South Carolina United States House of Representatives elections were held on November 8, 1966 to select six Representatives for two-year terms from the state of South Carolina. All six incumbents were re-elected and the composition of the state delegation remained five Democrats and one Republican.
"Supplemental Report of the Secretary of State to the General Assembly of South Carolina." Reports and Resolutions of South Carolina to the General Assembly of the State of South Carolina. Volume II. Columbia, SC: 1967, p. 17.