Largest Suburbs of Washington, D.C.

The Washington metropolitan area defined here includes Washington, D.C. and the independent cities of Alexandria, Fairfax, Manassas, Manassas Park, Falls Church, and Fredericksburg and the counties of Fairfax County, Prince William County, Arlington County, Loudoun County, Stafford County, Fauquier County, Clarke County, Warren County, Rappahannock County, Culpeper County, Madison County, and Spotsylvania County in the Commonwealth of Virginia and the counties of Prince George's County, Montgomery County, Frederick County, Charles County, and Calvert County in the State of Maryland.

Includes census-designated places (CDPs)

DOES NOT include the Baltimore metropolitan area

Source: https://en.wikipedia.org/wiki/Washington_metropolitan_area; https://en.wikipedia.org/wiki/List_of_census-designated_places_in_Maryland; https://en.wikipedia.org/wiki/List_of_census-designated_places_in_Virginia