Formed in 1772 from Frederick County. Named for Sir William Berkeley, colonial governor of Virginia from 1642-1652. Dismissed when Oliver Cromwell gained control of the English government, he was renamed governor in 1660 and served for 17 more years. County Quick FactsYear Founded: 1772 County Seat: Martinsburg 2005 Population: 97,534 County Commission400 W Stephen St Martinsburg, WV 25401 Phone:(304) 264-1923 Fax:(304) 267-9723 |