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
Maryland in the American Revolution George Washington was impressed with the Maryland regulars (the "Maryland Line") who fought in the Continental Army and, according to one tradition, this led him to bestow the name "Old Line State" on Maryland. Today, "the Old Line State" is one of Maryland's two official nicknames. The state also filled other roles during the war. For instance, the Continental Congress met briefly in Baltimore from December 20, 1776, through March 4, 1777. Baltimore served as the temporary capital of the colonies when the Second Continental Congress met there during December 1776 to February 1777, (when Philadelphia was occupied by the