Washington County, Maryland Washington County, Maryland Washington County is located in the western part of the U.S. state of Maryland. As of the 2010 census, the population was 147,430. Its county seat is Hagerstown. Washington County was the first county in the United States to be named for the Revolutionary War general (and later President) George Washington. Washington County is one of three Maryland counties recognized by the Appalachian Regional Commission as being part of Appalachia. The county borders southern Pennsylvania to the north, Northern Virginia to the south, and the Eastern Panhandle of West Virginia to the south and west. Washington County
Harmony Hall (Fort Washington, Maryland) stage plays, art exhibits, arts classes, scout meetings, and other cultural programs. The building was originally an elementary school. Harmony Hall (Fort Washington, Maryland) Harmony Hall, located in Fort Washington, Maryland, is managed by the United States National Park Service as part of the National Capital Parks-East system. It has been a National Park Service site since 1966. Harmony Hall is a -story Georgian country house built of red brick during the eighteenth century. It is surrounded by of land on Broad Creek, a Potomac River tributary. The house was built circa 1769 by Enoch Magruder. After his death, the