Naval District Washington
"The Quarterdeck of the Navy"
Wecome to Navy Region Naval District Washington. "The Quarterdeck of the Navy." With the nation's capital at its heart, Naval District Washington encompasses more than 4,000 square miles, including the District of Columbia; the Maryland counties of Anne Arundel, Calvert, Charles, Frederick, Montgomery, Prince George's, and St. Mary's, and northern Virginia counties of Loudoun, Fauquier, Fairfax, Prince William, Stafford King George, Westmoreland, Arlington and the cities within their outer boundaries.