Washington metropolitan area
The Washington metropolitan area (also referred to as the National Capital Region, Greater Washington, or locally as the DMV, short for District of Columbia, Maryland, and Virginia) is the metropolitan area comprising Washington, D.C., the federal capital of the United States, and its surroundings. The metropolitan area includes all of Washington, D.C., and parts of Maryland, Virginia and West Virginia.
Source: Wikipedia — Washington metropolitan area (CC BY-SA 4.0)