South Carolina's Public Service Commission implements 821 area code overlay in Upstate regions from July 19, requiring 10-digit dialing.

South Carolina's Public Service Commission announced the implementation of a new 821 area code as an overlay to existing 864 area code in Upstate regions, including Greenville, Spartanburg, and Anderson, from July 19. Mandatory 10-digit dialing will begin, ensuring a consistent supply of phone numbers without affecting pricing, coverage, or services. Newly connected phone numbers from August 19 may be assigned the 821 area code.