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
Summerfield, Maryland Summerfield, Maryland Summerfield is a census-designated place near Landover in Prince George's County, Maryland, in the United States. The population of the CDP was 10,898 at the 2010 census. It is a suburb of Washington, D.C. Fedex Field is located in Summerfield CDP, as is the Prince George's County Sports and Learning Complex. Prior to the 2010 Census, the area was not covered by another census-designated place. According to the U.S. Census Bureau, Summerfield has a total area of , of which , or 0.03%, is water. The CDP is bordered to the east by the Capital Beltway (I-495/95) and