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
Maryland Route 214 MD 214 is a part of the National Highway System as an intermodal connector between the Addison Road Metro station and the Capital Beltway. The highway is a National Highway System principal arterial from Southern Avenue to the Addison Road Metro station, from the Capital Beltway to US 301, and from Vicksburg Road near Davidsonville to Shoreham Beach Road in Beverley Beach. Central Avenue from Washington east to Edgewater was planned as one of the original state roads laid out by the Maryland State Roads Commission in 1909. This road followed most of MD 214's present alignment from Capitol Heights