Area Code Lookup
What Area Code Is Charleston?
3 area codes serve Charleston
Charleston is served by area codes 423, 843, 854. It spans Tennessee and South Carolina.
Area Codes Serving Charleston
Frequently Asked Questions
What area code is Charleston?
Charleston is served by area codes 423, 843, 854.
Why does Charleston have multiple area codes?
As demand for phone numbers increased, NANPA added area codes through splits (dividing the region) or overlays (layering a new code over the same geography). Charleston now has 3 area codes — 423 and 843 and 854 — covering the same or overlapping areas.
How do I call Charleston from outside the US?
To call Charleston from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-423-XXX-XXXX). The +1 is the country code for all NANPA countries.