Washington metropolitan area has part(s) Washington–Arlington–Alexandria metropolitan division
Nomenclature
The U.S. Office of Management and Budget defines the area as the Washington–Arlington–Alexandria, DC–VA–MD–WV metropolitan statistical area, a metropolitan statistical area used for statistical purposes by the United States Census Bureau and other agencies. The region's three largest cities are the federal city of Washington, D.C., the county (and census-designated place) of Arlington, and the independent city of Alexandria. The Office of Management and Budget also includes the metropolitan statistical area as part of the larger Baltimore–Washington metropolitan area, which has a population of 9,546,579 as of the 2014 Census Estimate.The Washington, D.C., Maryland, and Virginia portions of the metropolitan area are sometimes referred to as the National Capital Region, particularly by federal agencies such as the military, Department of Homeland Security, and some local government agencies. The National Capital Region portion of the Washington metropolitan area is also colloquially known by the abbreviation "DMV", which stands for the "District of Columbia, Maryland, Virginia." The region is surrounded by Interstate 495 with the locations inside of it referred to as Inside the Beltway. Washington, D.C., which is at the center of the area, is sometimes referred to as the District because of its status as a federal district, which makes it not part of any state. The Virginian portion of the region is known as Northern Virginia. The Maryland portion of the region is sometimes called the Maryland-National Capital Region by local authorities but rarely by the general public.
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