821 Area Code

The 821 area code is a telephone area code serving the western third of South Carolina.

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Area Code 821 Location: South Carolina

Phone numbers with the 821 area code originate from the western third of the U.S. state of South Carolina. This numbering plan area (NPA) covers the regions of Greenville, Spartanburg, and Anderson, along with twelve surrounding counties. It is largely coextensive with the Upstate region.

Major Cities in the 821 Service Area:

  • Greenville
  • Spartanburg
  • Anderson
  • Clemson
  • Gaffney
  • Greer
  • Mauldin

Overlay System

Area codes 864 and 821 are telephone overlay area codes that serve the same geographic region. Area code 864 was originally created on December 3, 1995. Area code 821 was set with an in-service date of August 19, 2024, following a permissive dialing period from January 19, 2024, to July 19, 2024.

Area Code 821 Location Map

Area Code 821 Location on South Carolina Map

Area code 821 is a general purpose code which was placed in service on August 19, 2024.

821 Area Code Prefixes

Our South Carolina phone number lookup service will analyze the three-digit prefix of any 821 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, South Carolina geographic region, and local calling area associated with the phone number.

Phone numbers follow the following structure under the North American Numbering Plan:

  • NPA- area code (where the number was originally assigned)
  • NXX - Central office code that locates the specific neighborhood and identifies the service provider
  • XXXX - Subscriber number identifies the individual phone line within that local exchange

Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.

Prefixes by Company

Company Number of Prefixes

Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.

Prefixes by Rate Center

Rate Center Number of Prefixes

Other South Carolina Area Codes

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