854 area code — Charleston, SC geographic
- State
- South Carolina
- Major area
- Charleston
- Time zone
- Eastern
- In service since
- 2015-10-19
- Split from
- 843
- Overlay complex
- 843 / 854
- Active prefixes
- 172
- Rate centers
- 64
- Carriers
- 34
- Projected exhaust
- 1Q 2053
The 854 area code covers Charleston, South Carolina, Eastern time zone, and dates back to October 19, 2015. Together with 843 it forms the 843/854 overlay. Because of number portability and VoIP, the area code tells you where the number was issued, not where the caller is right now.
NANPA lists 172 active NXX prefixes in 854, assigned to 34 carriers. 172 of those prefixes are pooled — shared between carriers in thousands-number blocks. The code spans 64 rate centers (billing localities).
Official projections put exhaust for the 843/854 complex at 1Q 2053.
The dialing plan is 10D for home-NPA local calls and 10D across codes.
Practical takeaway: the 854 label narrows geography to South Carolina, the prefix narrows it to a locality, and neither authenticates a caller. Verification means calling back through a number you found yourself.
Its parent code is 843, which it left in 2015.
Largest localities in 854
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Charleston | 29 | 843 |
| Hilton Head | 15 | 843 |
| Florence | 10 | 843 |
| Beaufort | 10 | 843 |
| Myrtle Beach | 9 | 843 |
| Summerville | 8 | 843 |
| Mount Pleasant | 6 | 843 |
| Moncks Corner | 5 | 843 |
| Walterboro | 4 | 843 |
| Bluffton | 3 | 843 |
FAQ
Will 854 run out of numbers?
NANPA's current forecast projects exhaust in 1Q 2053 — decades of capacity remain.
Why am I getting spam calls from 854 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 854 number does not prove the call originated there — see our guide to spotting spoofed calls.
Where is a 854 number from?
854 is assigned to Charleston and surrounding areas of South Carolina in the Eastern time zone. The three digits after the area code (the prefix) narrow it down to a rate center.
Is 854 a toll-free number?
No. 854 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Why do 843 and 854 cover the same place?
They are overlays: when a code runs low on numbers, a new code is added over the same territory instead of splitting it. The 843/854 complex shares one service area, and local calls are dialed with 10 digits.