Washington

Washington, county, northern Maryland, U.S., bounded by Pennsylvania to the north and the Potomac River (which constitutes the border with Virginia and West Virginia) to the south and southwest. The county lies in the Cumberland Valley between the Allegheny (west) and the Blue Ridge (east) mountains; the Appalachian National Scenic Trail follows the crest line of the Blue Ridge. The county was created in 1776 and named for George Washington. Hagerstown, the county seat, is...