The Washington–Baltimore combined statistical area is a statistical area consisting of the two overlapping labor-market metropolitan areas of Washington, D.C. and Baltimore, Maryland. The region includes Central Maryland, Northern Virginia, three counties in the Eastern Panhandle of West Virginia, and one county in South Central Pennsylvania. It is the most educated, highest-income, and third-largest combined statistical area in the United States, behind only New York–Newark and Los Angeles–Long Beach.[1][2]
CSA in the United States
Washington–Baltimore combined statistical area
CSA
The National Mall in Washington, D.C., Baltimore's Inner Harbor, and Rosslyn in Arlington
Map of the current OMB-designated Washington-Baltimore-Arlington, DC-MD-VA-WV-PA Combined Statistical Area.
"Baltwash" redirects here. For the highway linking the two cities, see Baltimore–Washington Parkway.
Officially, the area is designated by the Office of Management and Budget (OMB) as the Washington–Baltimore–Arlington, DC–MD–VA–WV–PA Combined Statistical Area. It is composed primarily of two major Metropolitan Statistical Areas (MSAs): the Washington–Arlington–Alexandria, DC–VA–MD–WV MSA and the Baltimore–Columbia–Towson, MD Metropolitan Statistical Area. In addition, five other smaller urban areas not contiguous to the main urban area but having strong commuting ties with the main area are included in the metropolitan area.[3] These are: the Hagerstown–Martinsburg, MD–WV MSA, the Chambersburg–Waynesboro, PA MSA, the Winchester, VA–WV MSA, the California–Lexington Park, MD MSA, and the Easton, MD micropolitan statistical area (µSA).
Some counties, such as Caroline and King George County, Virginia, are not officially designated by the OMB as members of this metropolitan area, but still consider themselves members anyway.[4][5][6][7][8] This is mostly due to their proximity to the area, the size of their commuter population, and by the influence of local broadcasting stations. The population of the entire Washington–Baltimore Combined Statistical Area as of the Census Bureau's 2020 data is 9,973,383. The most populous city is Washington, D.C., with a population of 689,545. The most populous county is Fairfax County, Virginia, with a population of 1,150,309.[9]
Components of the combined statistical area
The counties and independent cities and their groupings that comprise the area are listed below with their 2012 population estimates. Central counties/cities (designated as such by OMB) for each MSA are shown in italics.
Washington–Arlington–Alexandria, DC–VA–MD–WV Metropolitan Area (5,860,342)
Founded in 1957, the Metropolitan Washington Council of Governments (MWCOG) is a regional organization of 23 Washington-area local governments, as well as area members of the Maryland and Virginia state legislatures, the U.S. Senate, and the U.S. House of Representatives. MWCOG provides a forum for discussion and the development of regional responses to issues regarding the environment, transportation, public safety, homeland security, affordable housing, community planning, and economic development.[10]
The National Capital Region Transportation Planning Board, a component of MWCOG, is the federally designated Metropolitan Planning Organization for the metropolitan Washington area.[11]
Baltimore Metropolitan Council
The Baltimore Metropolitan Council is the equivalent organization for the Baltimore portion of the combined Baltimore–Washington metropolitan area.[12] The BMC, which was created in 1992 as the successor to the Regional Planning Council and Baltimore Regional Council of Governments, consists of the Baltimore region's elected executives, representing Baltimore City and Anne Arundel, Baltimore, Carroll, Harford and Howard counties.[13]
The Baltimore Regional Transportation Board is the federally recognized Metropolitan Planning Organization for transportation planning in the Baltimore region.[13]
List of principal cities
See List of cities in the Baltimore–Washington metropolitan area for a full list.[14]
Not limited to its proximity to the National Institutes of Health in Bethesda, Maryland's Washington suburbs are a major center for biotechnology. Prominent local biotechnology companies include MedImmune, United Therapeutics, The Institute for Genomic Research, Human Genome Sciences and the Howard Hughes Medical Institute.
Defense contracting
Many defense contractors are based in Northern Virginia and Montgomery County, Maryland to be close to the Pentagon in Arlington. Local defense contractors include Lockheed Martin, the largest, as well as Northrop Grumman, General Dynamics, BAE Systems Inc., Computer Sciences Corporation (CSC), Booz Allen Hamilton, Leidos, Science Applications International Corporation (SAIC), and Orbital Sciences Corporation.
Founded as D.C. United Women; rebranded as Washington Spirit in 2012 and started NWSL play in 2013.
Transportation
Baltimore–Washington InternationalReagan National AirportDulles InternationalWashington MetroThe Capital Beltway (I-495) in Northern VirginiaThe Baltimore Metro subway
The District of Columbia itself, and Virginia's incorporated cities, are county equivalents. Virginia's incorporated cities are listed under their surrounding county. The incorporated cities bordering more than one county (Alexandria, Falls Church and Fredericksburg) are listed under the county they were part of before incorporation as a city. Some unincorporated areas and census-designated places like Silver Spring and Bethesda in Maryland, Reston in Virginia, as well as the County of Arlington in Virginia are also treated as city-like entities (or principal cities) even though they have not been legally incorporated as such.
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Northeast megalopolis major urban regions
Core cities are metropolitan core cities of at least a million people. The other areas are urban areas of cities that have an urban area of 150,000+ or of a metropolitan area of at least 250,000+. Satellite cities are in italics.
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