Washington, D.C., PMSA
(Primary Metropolitan Statistical Area)
Washington, D.C., PMSA | Washington, D.C., MSA
The following is a list of counties and cities in both the Washington MSA and the Washington PMSA, two geographic boundaries for the Washington metro area..
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Why are there two boundaries?
The Census Bureau establishes statistical areas to be used by government agencies and other groups to define the boundaries of a metropolitan area. The Washington MSA (Metropolitan Statistical Area) was used until December 31, 1992, when the Census bureau expanded the region and it became the Washington Primary Statistical Metropolitan Area (PMSA). The Washington PMSA is part of the larger Washington-Baltimore D.C.-Md.-Va.-W.V. CMSA (Consolidated Metropolitan Statistical Area). Two other PMSAs -- Baltimore and Hagerstown -- make up the CMSA.
In Local Economy Watch, all the figures are for the Washington PMSA, with the exception of Retail Sales, which is still tracked by the boundaries of the old MSA by the Department of Commerce.
Washington PMSA   District of Columbia   Virginia Washington   Arlington Co.   Clarke Co. Maryland   Culpeper Co. Calvert Co.   Fairfax Co. Charles Co.   Fauquier Co. Frederick Co.   King George Co. Montgomery Co.   Loudoun Co. Prince George's Co.   Prince William Co.   Spotsylvania Co. West Virginia   Stafford Co. Berkeley Co.   Warren Co. Jefferson Co.   Alexandria (City)   Fairfax (City)   Falls Church (City)   Fredericksburg (City)   Manassas (City)   Manassas Park (City) Source: Census Bureau
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Washington MSA   District of Columbia   Virginia Washington   Arlington Co.   Fairfax Co. Maryland   Loudoun Co. Calvert Co.   Prince William Co. Charles Co.   Stafford County Co. Frederick Co.   Alexandria (City) Montgomery Co.   Fairfax (City) Prince George's Co.   Falls Church (City)   Manassas (City)   Manassas Park (City) Source: Census Bureau