Martinsburg is a city in the Eastern Panhandle region of West Virginia, United States. The city's population was 14,972 at the 2000 census; according to a 2009 Census Bureau estimate, Martinsburg's population was 17,117, making it the largest city in the Eastern Panhandle and the eighth largest municipality in West Virginia. Martinsburg is the county seat of Berkeley County and one of the core cities in the Hagerstown-Martinsburg, MD-WV Metropolitan Statistical Area. Martinsburg and Berkeley County are growing very rapidly from the influx of people moving from Washington, D.C. and Baltimore.
Martinsburg was founded in 1778 by General Adam Stephen who named it in honor of Colonel Thomas Bryan Martin, a nephew of Thomas Fairfax, 6th Lord Fairfax of Cameron.
Aspen Hall is a Georgian mansion, the oldest part of which was built in 1745 by Edward Beeson, Sr. making it the oldest house in the city. Aspen Hall and the people who lived there played important roles in the agricultural, religious, transportation, and political heritage of the region. Significant events related to the British, French, and Indian War; the Revolution, and the Civil War took place on the property. Three original buildings are still standing including the rare blockhouse of Mendenhall's Fort.