 The South Carolina Public Service Commission is reminding of a new 821 area code overlay for the upstate region, including Greenville, Spartanburg and Anderson launches on July 19th. All calls will require a 10 digit phone number and seven digit calls will not be completed. Existing 864 area code numbers will remain unchanged. New phone lines after August 19th, 2024 may be assigned to the 821 area code.