Area Code Lookup
What Area Code Is Martinsburg?
2 area codes serve Martinsburg · West Virginia
Martinsburg is served by area codes 304, 681. It is located in West Virginia.
Area Codes Serving Martinsburg
Frequently Asked Questions
What area code is Martinsburg?
Martinsburg is served by area codes 304, 681. It is located in West Virginia.
Why does Martinsburg 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). Martinsburg now has 2 area codes — 304 and 681 — covering the same or overlapping areas.
How do I call Martinsburg from outside the US?
To call Martinsburg from abroad, dial +1 followed by the area code and 7-digit local number (e.g. +1-304-XXX-XXXX). The +1 is the country code for all NANPA countries.