The Washington metropolitan area, also sometimes referred to as the National Capital Region, is the metropolitan area centered on Washington, D.C. The metropolitan area includes all of Washington, D.C. and parts of Maryland, Virginia, and West Virginia. It is part of the larger Washington–Baltimore combined statistical area. The Washington metropolitan area is one of the most educated and affluent metropolitan areas in the U.S. The metro area anchors the southern end of the densely populated Northeast megalopolis with an estimated total population of 6,385,162 as of the 2020 U.S. Census[update], making it the sixth-largest metropolitan area in the nation and the largest metropolitan area in the Census Bureau's South Atlantic division.
From Wikipedia
