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US area code · South Carolina

Area code 821

Where the 821 area code is, its overlay and how to dial a +1 821 number from anywhere.

CoversSouth CarolinaTime zoneEastern (ET)TypeOverlay
Quick answer

The 821 area code is in South Carolina, United States (Eastern (ET)). To call from abroad: +1 821 555-0123. It is an overlay, so all 10 digits are dialled.

StateSouth Carolina
Time zoneEastern (ET)
TypeOverlay
10-digit dialingRequired
In service since04-Oct-2022

The 821 area code is a geographic North American Numbering Plan (NANP) code covering South Carolina. It has been in service since 04-Oct-2022 and sits in the Eastern (ET) time zone.

Overlay 821 shares its region

Several area codes cover the same geographic area, so two neighbours can have different codes. Because of the overlay, you must dial all 10 digits (area code + number) even for local calls.

821864

How to dial a 821 number

From abroad+1 821 555-0123
Within the US / Canada1 821 555-0123
Locally (same area)821 555-0123

Other South Carolina area codes

803839843854864

Frequently asked questions

Where is the 821 area code?

The 821 area code is in South Carolina, United States (Eastern (ET)).

Is 821 an overlay area code?

Yes. 821 overlays the same region as 864, so callers dial all 10 digits.

Do I have to dial 10 digits for 821?

Yes — dial the area code plus the seven-digit number.

How do I call a 821 number from another country?

Dial your exit code (or +), then 1, then 821, then the number: +1 821 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 821 number does not pinpoint a street or ZIP code.

Missed a call from +1 821?

In the 30 days to September 24, 2026, 11 unwanted calls showing a 821 number were reported to the US Federal Trade Commission, 64% of them recorded messages or robocalls. That puts 821 at #406 of 670 area codes reported.

Other6
Reducing your debt (credit cards, mortgage, student loans)3
Lotteries, prizes & sweepstakes1
Dropped call or no message1
Before you call back
  • If you do not know anyone in South Carolina, do not call back: a genuine caller will leave a message or send a text.
  • Scammers fake the number shown on caller ID, so a 821 number can hide a caller anywhere in the world.
  • Never give a code received by text or a bank detail to an unknown caller. In the US, calls can be reported at reportfraud.ftc.gov.

Who issues +1 821 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 821:

New Cingular Wireless PCS, LLC 24 14Onvoy, LLC 9Onvoy Spectrum, LLC 2Leap Telecom, LLC 1Cellco Partnership Dba Verizon Wireless 1

About 46.4% of the 56 prefixes in use belong to mobile carriers: a 821 number is often a cell phone, and it may have moved to another carrier since.

Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.

All US area codes United States +1 Map of area code 821 — cities & rate centres