Washington County, Maryland is included in the Hagerstown-Martinsburg, MD-WV Metropolitan Statistical Area, which is also included in the Washington-Baltimore-Arlington, DC-MD-VA-WV-PA Combined Statistical Area. The closes states to Washington County is west Virginia, Pennsylvania, Virginia, and Tennessee. The western portions of the Province of Maryland (including present Washington County) were incorporated into Prince George's County in 1696. This original county included six current counties. The first to be created was Frederick, separated from Prince George's County in 1748. Following independence, the sovereign State of Maryland formed Washington County on September 6, 1776, by the division of Frederick County. At the same time, a portion
Capital Plaza Mall hub---Landover Mall. Capital Plaza's prime location along Maryland Route 450 and the Baltimore-Washington Parkway made it ideal for shoppers by both automobile and public transit. Local bus service to Capital Plaza operated along Annapolis Road linking the plaza with shoppers from the nearby neighborhoods of College Park, Hyattsville, Riverdale, Rogers Heights, Edmonston, Bladensburg, Colmar Manor, Cottage City, Brentwood, Mount Rainier, Villa Heights, Cheverly, Landover Hills, Landover, New Carrollton, Lanham, Glenarden, and even certain pockets of Washington, DC (provided by the old WMA Transit Company, until later becoming the Metrobus system). In the late 1970s-1980s, Capital Plaza even featured a Trailways