South Carolina currently utilizes 4 area codes. When first established by AT&T and the Bell System in 1947, 803 covered the entire state of South Carolina. The most recently added was 854 in 2015 as an overlay to 843. Today, 843 is the most populated with an estimated 1.6 million of the state's 4.6 million residents.
Area Codes for the Largest Cities in South Carolina