Berkeley Springs is a town in, and the county seat of, Morgan County, West Virginia, USA, in the state's Eastern Panhandle. While the area was part of Virginia (prior to 1861), the town was incorporated as Bath. Since 1802, it has been referred to by the name of its original Virginia post office, Berkeley Springs. The population of the town was 624 at the 2010 United States Census. The town is located within the Hagerstown-Martinsburg, MD-WV Metropolitan Statistical Area. Berkeley Springs is a sister city to Bath, Somerset, England.