Martinsburg, WV utilizes an area code overlay in which area codes 304 and 681 serve the same geographic area. Ten digit dialing (area code + seven digit number) is necessary.
In addition to Martinsburg, WV area code information read more about area codes 304 and 681 details and West Virginia area codes.
Martinsburg, WV is located in Berkeley County and observes the Eastern Time Zone. View our Times by Area Code tool.