10-Digit Dialing Starting for Upstate

Starting today, anyone making local phone calls in the Upstate must dial the area code as part of a new area code overlay. The South Carolina Public Service Commission approved the overlay for the 864 area code region in September 2023, with the new 821 area code going into service on August 19. Callers will need to use 10-digit dialing due to the projected exhaustion of 864 phone numbers by early 2025. This will be the sixth area code in South Carolina, following the addition of the 839-area code to the 803 region in 2020.