Zip Code 25404 is located in the state of West Virginia in the Washington D.C. metro area. Zip code 25404 is primarily located in Berkeley County. Portions of 25404 are also located in Jefferson County. The official US Postal Service name for 25404 is MARTINSBURG, West Virginia. Portions of zip code 25404 are contained within or border the city limits of Martinsburg, WV, . Zip code 25404 is within area code 681 and area code 304. 25404 can be classified socioeconically as a Lower Middle Class class zipcode in comparison to other zipcodes in West Virginia.