Area Code 854 — Charleston, South Carolina

NANP area code

854

UTC−5, UTC−4 during daylight saving

State
South Carolina
Primary city
Charleston
Time zone
Eastern
In service
2015
Overlay
843

The code reaches 130 communities and 19 counties across South Carolina.

Was this call legitimate?

The area code itself carries no risk signal. 854 is assigned to Charleston, South Carolina, so a call from it is consistent with a real caller in that area — but the digits alone prove nothing, because they can be forged.

Caller ID is set by whoever places the call, not verified by the network. That is why neighbour spoofing works: an operation anywhere in the world can display a number that matches the area code — and often the first three digits after it — of the person being called, so the call looks local. Every community in the 854 territory is a plausible-looking origin for a forged 854 number, which is why one can be made to look like a neighbour to so many people. The same applies to its overlay code 843, which serves the same ground.

If you did not recognise the call: let it go to voicemail — a legitimate caller with real business will leave one. Do not return the call using the number shown; look the organisation up independently and call the number you found. Never confirm personal details, card numbers, or one-time codes to someone who called you, however plausible the number looked.

Codes.zone publishes no complaint counts, risk scores, or caller identities. We hold no data on individual numbers and will not estimate what we cannot source.

Local time and when to call back

Time there now

Eastern · UTC−5, UTC−4 during daylight saving

Reasonable callback window

8:00 AM – 9:00 PM

local time in Eastern

Federal rules bar telemarketing calls to a residence outside 8:00 AM–9:00 PM in the called party's own time zone. It is a sensible bound for a personal callback too — and a caller who rang you well outside it was not observing it.

Overlay codes and ten-digit dialling

854 does not have its territory to itself. 843 covers the same ground, serving Charleston and the rest of the 854 territory. An overlay is what a regulator adds when a region runs out of assignable numbers: rather than splitting the area and forcing half the residents to change their number, a second code is laid over the top and new numbers are issued from it.

The practical consequence: two neighbours on the same street can hold numbers in different area codes, so the code tells you nothing about which part of town a caller is in — and local calls must be dialled as all ten digits, because seven is no longer unambiguous.

Cities served

largest 20 by ZIP count
Communities served by area code 854, ranked by how many ZIP codes each holds.
CityZIP codesCounty
Charleston16Berkeley County
Myrtle Beach7Horry County
Beaufort6Beaufort County
Florence6Florence County
North Charleston5Charleston County
Hilton Head Island4Beaufort County
Summerville4Berkeley County
Conway3Horry County
Mount Pleasant3Charleston County
North Myrtle Beach3Horry County
Darlington2Darlington County
Georgetown2Georgetown County
Hartsville2Darlington County
Johns Island2Charleston County
Adams Run1Charleston County
Andrews1Georgetown County
Awendaw1Charleston County
Aynor1Horry County
Bennettsville1Marlboro County
Bethune1Kershaw County

110 further communities not listed. All South Carolina area codes →

Each point is a community served by 854, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.
  • Reference points and footprint
  • Not an official NANPA boundary
  • Not a USPS delivery area

Scope every community matched to 854. Source geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot), GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . Coordinates are place reference points, not boundaries.

Counties

Prefixes inside 854

We do not publish the NXX prefixes inside 854. The assignment of prefixes to rate centres comes from LERG routing data, which is proprietary, and we will not estimate it from postal data — ZIP codes and telephone prefixes do not map onto each other. Awaiting a clean-rights NPA-NXX source.

Why this code exists

854 is the newer code here, added in 2015 over 843 (1998). The older code had run out of exchanges to assign, and an overlay avoids the alternative — splitting the region and forcing half its residents to renumber. New lines have been issued from 854 since.