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The official OMB-designated Washington-Baltimore-Northern Virginia, DC-MD-VA-WV Combined Statistical Area, based on the 2000 Census.
The official OMB-designated Washington-Baltimore-Northern Virginia, DC-MD-VA-WV Combined Statistical Area, based on the 2000 Census. The Office of Management and Budget (OMB is a Cabinet -level office and is the largest office within the Executive Office of the President of the United States (EOP
A general map of the counties that are a part of the area, based on the 1990 Census.
A general map of the counties that are a part of the area, based on the 1990 Census.

The Baltimore-Washington Metropolitan Area is a consolidated metropolitan area consisting of the overlapping labor market region of the cities of Washington, D.C. and Baltimore, Maryland. A metropolitan area is a large population center consisting of a large Metropolis and its adjacent zone of influence or of more than one closely adjoining neighboring central Washington DC ( formally the District of Columbia and commonly referred to as Washington, the District, or simply D The region includes Central Maryland, Northern Virginia, and two counties in the Eastern Panhandle of West Virginia. Northern Virginia (colloquially referred to as "NOVA" or "NoVA" consists of several The Eastern Panhandle of West Virginia is a narrow stretch of territory in the northeast of the state bordering Maryland and Virginia, United States West Virginia ( is a state in the Appalachian Upland South, and Mid-Atlantic regions of the United States, bordered by

Officially, the area is designated by the U. S. Office of Management and Budget (OMB) as the Washington-Baltimore-Northern Virginia, DC-MD-VA-WV Combined Statistical Area (CSA). Table of United States Combined Statistical AreasThe United States Office of Management and Budget (OMB defines micropolitan and metropolitan statistical areas. The CSA is composed primarily of two major metropolitan areas, the Baltimore-Towson Metropolitan Statistical Area (MSA) and the Washington-Arlington-Alexandria, DC-VA-MD-WV MSA. The Baltimore-Towson Metropolitan Statistical Area is a Metropolitan Statistical Area (MSA in Maryland as defined by the United States Office The Washington DC Metropolitan Area, formally known as the Washington-Arlington-Alexandria DC-VA-MD-WV MSA is a U In addition, three other smaller urban areas not contiguous to the main urban area but having strong commuting ties with the main area are also included in the metropolitan area. These are the Winchester, VA-WV MSA, the Lexington Park, MD Micropolitan area and the Culpeper, VA Micropolitan area. Winchester VA-WV MSA is a US Metropolitan Statistical Area (MSA as defined by the United States Office of Management and Budget (OMB as of June Table of United States Micropolitan Statistical Areas|Table of United States Core Based Statistical Areas United States Micropolitan Statistical Areas (µSA where the initial Greek letter Some counties and cities are not officially designated by the OMB as members of this metropolitan area, but still consider themselves members anyway. 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 Baltimore-Washington Metroplex as of 2007 is 8,241,9121, 2, 3, 4, 5, 6. The most populated city is Baltimore, with a population of 637,455. The most populated county is Fairfax County, with 1,010,241. Fairfax County is a county in Northern Virginia, in the United States.

Contents

Components of the metropolitan area

The counties and independent cities and their groupings that comprise the metropolitan area are listed below with 2004 Census Bureau estimates of their populations.

Main article: Washington Metropolitan Area
Main article: Baltimore Metropolitan Area

Main Article: Hagerstown Metropolitan Area

List of cities

See List of cities in the Baltimore-Washington Metropolitan Area for a full list. The Washington DC Metropolitan Area, formally known as the Washington-Arlington-Alexandria DC-VA-MD-WV MSA is a U Frederick County is located in the western part of the US state of Maryland, bordering the southern border of Pennsylvania and the northeastern border Montgomery County of the US state of Maryland is situated just north of Washington D Washington DC ( formally the District of Columbia and commonly referred to as Washington, the District, or simply D Calvert County is a County located in the US state of Maryland. Charles County is a County in the south central portion of the U Prince George's County is located in the US state of Maryland located immediately north east and south of Washington D Clarke County is a county located in the US state &mdash officially " Commonwealth " &mdash of Virginia. Fairfax County is a county in Northern Virginia, in the United States. Fauquier (fɔˈkiːɹ is a county located in the United States commonwealth/state of Virginia. Loudoun County (ˈlaʊdən "LOUD-un" is a county located in the Commonwealth of Virginia, and is part of the Washington Metropolitan Prince William County is a county located in the Washington Metropolitan Area. Spotsylvania County is a county in the US state &mdash officially " Commonwealth " &mdash of Virginia. Stafford County is a county located in the Commonwealth of Virginia, a U Warren County is a county located in the United States Commonwealth of Virginia. Alexandria is an Independent city in the Commonwealth of Virginia. This article refers to the independent city of Fairfax Va For the surrounding unincorporated area of Fairfax County with a Fairfax postal address please see Fairfax County Virginia Falls Church is an Independent city in Virginia, United States. Fredericksburg is an Independent city in the Commonwealth of Virginia and is located 50 miles south of Washington D Manassas Park is a city in Virginia. Like all Virginia municipalities incorporated as cities, it is an Independent city and not part of any county it is Jefferson County is a County located in the US state of West Virginia. The Baltimore-Towson Metropolitan Statistical Area is a Metropolitan Statistical Area (MSA in Maryland as defined by the United States Office Anne Arundel County (ˌænəˈrʌndəl with a stress on the run) is a County located in the U Baltimore County is a County located in the northern part of the U Carroll County is a County located in the US state of Maryland. Harford County is a County in the US state of Maryland. In 2004 its Population was estimated to be 233340 Howard County is a County located in the central part of the U Queen Anne's County is a County located on the Eastern Shore of the U The Hagerstown Metropolitan Area, officially designated by the United States Office of Management and Budget (OMB as Hagerstown-Martinsburg MD-WV Metropolitan Washington County is a County located in the western part of the U Berkeley County is a County located in the US state of West Virginia. Frederick County is a county located in the US state &mdash officially " Commonwealth " &mdash of Virginia. Winchester is an independent city located in the state of Virginia. Hampshire County is a County located in the US state of West Virginia. Saint Mary's County (often abbreviated as St Mary's County) is a County located in the U Culpeper County is a county located in the US state &mdash officially " Commonwealth " &mdash of Virginia. List of cities in the Baltimore-Washington Metropolitan Area.

Washington area

Baltimore area

Economy

Local industries

Biotechnology industry

Not limited to its proximity to the National Institutes of Health, Maryland's Washington areas are a major center for biotechnology. Washington DC ( formally the District of Columbia and commonly referred to as Washington, the District, or simply D Alexandria is an Independent city in the Commonwealth of Virginia. Bethesda is an Unincorporated area in southern Montgomery County Maryland, just Northwest of Washington D Frederick is the County seat of Frederick County Maryland, United States. Fredericksburg is an Independent city in the Commonwealth of Virginia and is located 50 miles south of Washington D Gaithersburg is a city in Montgomery County, Maryland. As of 2005, the city had an estimated total population of 57698 making it the fourth largest in Herndon is a town in Fairfax County, Virginia, United States. Laurel is a Maryland, US Reston is an internationally known Planned community whose goal was to revolutionize post-World War II concepts of land use and residential/corporate development in Rockville is the County seat of Montgomery County Maryland, United States. Silver Spring is an urbanized Unincorporated area in Montgomery County Maryland, USA Tysons Corner is an Unincorporated area in Fairfax County, Virginia, near Washington D Waldorf is an Unincorporated community and Census-designated place in Charles County Maryland. Catonsville is an Unincorporated community and a Census-designated place in Baltimore County, Maryland, United States. Columbia is a Census-designated place and planned community in Howard County, Maryland, United States. Dundalk Ellicott City is an Unincorporated community and Census-designated place in Howard County, Maryland, United States. Glen Burnie is a Census-designated place (CDP in Anne Arundel County, Maryland, United States, and is a Suburb of Baltimore Westminster is the County seat of Carroll County, Maryland, United States. Brooklyn Park is a Census-designated place (CDP in Anne Arundel County, Maryland, United States. "NIH" redirects here For other meanings of NIH see NIH (disambiguation. Biotechnology is Technology based on Biology, especially when used in Agriculture, Food science, and Medicine. Prominent local biotech companies include MedImmune, United Therapeutics, The Institute for Genomic Research, Human Genome Sciences and the Howard Hughes Medical Institute. The Institute for Genomic Research ( TIGR) was a Non-profit Genomics research institute founded in 1992 by Craig Venter in Human Genome Sciences ( is a Biopharmaceutical Corporation founded in 1992. The Howard Hughes Medical Institute (HHMI is a United States Non-profit medical Research institute based in Chevy Chase Maryland

Defense contracting

Many defense contractors are located in Maryland, Washington, D. C. and Northern Virginia to be close to the Pentagon in Arlington. The Pentagon is the Headquarters of the United States Department of Defense, located in Arlington County, Virginia. Local defense contractors include, with the largest being Lockheed Martin in Bethesda, Maryland, as well as General Dynamics, Computer Sciences Corporation (CSC), Science Applications International Corporation (SAIC), and Orbital Sciences Corporation. Lockheed Martin ( is a large multinational Aerospace manufacturer and advanced technology Company formed in 1995 by the merger of General Dynamics Corporation ( is a defense conglomerate formed by Mergers and Divestitures and as of 2008 it is the fifth largest Defense contractor CSC2jpg|thumb|250px|CSC's branch office in HITEC City, Hyderabad, India]] Computer Sciences Corporation (CSC is an Information technology Science Applications International Corporation ( SAIC) is a FORTUNE 500 scientific engineering and technology applications company in the United States with

Notable company headquarters in the region

(Numbers denote Fortune 500 company ranking. Please do not add the complete list of fortune 500 companies The list is copyrighted by Fortune which makes money by selling the content )

Washington, District of Columbia

Maryland

Virginia

Transportation

Major airports

Rail transit systems

Major highways

See also

Bethesda is an Unincorporated area in southern Montgomery County Maryland, just Northwest of Washington D T Rowe Price ( is a publicly owned Investment firm, headquartered in Baltimore Maryland. For other uses see TV1 disambiguation TV One is a New Zealand national television network owned and operated by state-owned media Silver Spring is an urbanized Unincorporated area in Montgomery County Maryland, USA Silver Spring is an urbanized Unincorporated area in Montgomery County Maryland, USA Under Armour is a brand of clothing headquartered in Baltimore, Maryland, designed for use in Sports It was originally created to be worn underneath AES Corporation ( is a Fortune 1000 company that generates and distributes electrical power. BearingPoint Inc ( is one of the world’s largest providers of management and technology consulting services to Global 2000 companies and government organizations McLean (pronounced "mick-CLANE") is an Unincorporated community located in Fairfax County in Northern Virginia. Booz Allen Hamilton is a private Consulting firm and Government contractor with Headquarters in McLean Virginia, USA and 63 offices McLean (pronounced "mick-CLANE") is an Unincorporated community located in Fairfax County in Northern Virginia. Capital One Financial Corp ( is a McLean Virginia -based Bank holding company specializing in Credit cards, home loans, Auto loans McLean (pronounced "mick-CLANE") is an Unincorporated community located in Fairfax County in Northern Virginia. This article discusses the current entity which operates as Chevy Chase Bank McLean (pronounced "mick-CLANE") is an Unincorporated community located in Fairfax County in Northern Virginia. McLean (pronounced "mick-CLANE") is an Unincorporated community located in Fairfax County in Northern Virginia. Gannett Company Inc ( is a publicly-traded media Holding company based in the United States. McLean (pronounced "mick-CLANE") is an Unincorporated community located in Fairfax County in Northern Virginia. General Dynamics Corporation ( is a defense conglomerate formed by Mergers and Divestitures and as of 2008 it is the fifth largest Defense contractor Falls Church is an Independent city in Virginia, United States. KBR Inc (formerly Kellogg Brown & Root) is an American engineering and construction company formerly a subsidiary of Halliburton, based in Mars Incorporated is a world-wide manufacturer of Confectionery, pet food and other food products with US$ 21 billion in annual sales in 2006 McLean (pronounced "mick-CLANE") is an Unincorporated community located in Fairfax County in Northern Virginia. NVR is a Fortune 500 homebuilding company based in Reston Virginia, USA Reston is an internationally known Planned community whose goal was to revolutionize post-World War II concepts of land use and residential/corporate development in Dulles Virginia is an unincorporated Census-designated place located in Loudoun County, Virginia, part of the Washington Metropolitan SLM Corporation, commonly known as Sallie Mae, is the United States ' largest college student loan company managing more than $126 Reston is an internationally known Planned community whose goal was to revolutionize post-World War II concepts of land use and residential/corporate development in USA TODAY is a national American daily Newspaper published by the Gannett Company. McLean (pronounced "mick-CLANE") is an Unincorporated community located in Fairfax County in Northern Virginia. Volkswagen Group of America Inc (sometimes referred to as Volkswagen of America, abbreviated to VWoA) is the United States operational headquarters Herndon is a town in Fairfax County, Virginia, United States. Washington Dulles International Airport is a public Airport located 25 miles (40 km) west of the Central business district of Washington D Chantilly is an Unincorporated community located in western Fairfax County and southeastern Loudoun County of Northern Virginia. The busiest airports in the United States by international passenger traffic from the years 1990 1995 2000 and 2005 from the Bureau of Transportation Statistics at the U Baltimore/Washington International Thurgood Marshall Airport serves the Baltimore-Washington Metropolitan Area ( U Anne Arundel County (ˌænəˈrʌndəl with a stress on the run) is a County located in the U Ronald Reagan Washington National Airport is a public Airport located three miles (5 km) south of the Central business district of Washington The National Railroad Passenger Corporation, Doing business as Amtrak, is a Government-owned corporation that was organized on May 1, 1971 MARC, prior to 1984 known as Maryland Rail Commuter Service, is a Regional rail system comprising three lines in the Baltimore-Washington Metropolitan Area The Maryland Transit Administration Light Rail is a Light rail system serving Baltimore Maryland, United States, and the surrounding suburbs The Metro Subway or Baltimore Metro is a single-line Rapid transit system serving the greater Baltimore Maryland, United States area and operated The Virginia Railway Express (VRE is a commuter rail service that connects the Northern Virginia area with Washington DC. Interstate 270 (abbreviated I-270) is a 344-mile spur Interstate highway that travels between Interstate 70 in Frederick Maryland Interstate 370 (abbreviated I-370) is a 313-mile Interstate highway spur route off Interstate 270 in Gaithersburg, Maryland Interstate 70 (I-70 is an Interstate highway in the United States that runs from Interstate 15 near Cove Fort Utah, to a Park and Ride Interstate 66 (I-66 is an Interstate highway in the eastern United States. Interstate 83 (abbreviated I-83) is an Interstate highway in the eastern United States. Interstate 95 ( I-95) is the main Highway on the East Coast of the United States, paralleling the Atlantic Ocean from Maine to Interstate 81 (abbreviated I-81) is an Interstate highway in the eastern part of the United States. Interstate 195 (abbreviated I-195) in Maryland is a spur of Interstate 95 just south of Baltimore that travels from Interstate 95 Interstate 295 (I-295 in the US state of Maryland and in Washington D Interstate 395 (abbreviated I-395) in Virginia is a 13 mile (21 km long spur route that begins at a junction with Interstate 95 in Springfield Virginia Interstate 395 (abbreviated I-395) is a 2-mile-long spur from Interstate 95 that travels from Interstate 495 (abbreviated I-495) is a Freeway -class Interstate highway which circles Washington D Interstate 695 (abbreviated I-695) is a -long full beltway Interstate highway extending around Baltimore Maryland, USA. Interstate 795 (I-795 also known as the Northwest Expressway, is a nine-mile Freeway linking Baltimore 's northwestern suburbs of Pikesville Interstate 895 ( I-895) - the Harbor Tunnel Thruway - is a Freeway in the U Interstate 97 (abbreviated I-97) is an intrastate Interstate highway located entirely within Anne Arundel County Maryland, United US Route 1 (US 1 is a major north-south US Highway that serves the East Coast of the United States. US Route 50 is a major east-west route of the US Highway system, stretching just over 3000 miles (4800 km from Ocean City Maryland on the Atlantic Ocean US Route 29 is a north-south United States highway that runs for 1036 miles (1667 km from the western suburbs of Baltimore Maryland, to Pensacola Florida US Route 15 is a -long United States highway, designated along South Carolina, North Carolina, Virginia, Maryland, Pennsylvania US Route 11 is a north-south United States highway extending 1645 mile US Route 340 is a spur of US Route 40. It currently runs for 156 miles (251 km from Frederick Maryland at U Maryland Route 2 is the longest State highway in Maryland Much of the northern section consists of Governor Ritchie Highway, the first high-speed roadway connecting Maryland Route 4 is a long road that runs northwest to southeast in Maryland. Maryland Route 26 is an east-west road in central Maryland. Outside of the Baltimore city limits it is known as Liberty Road inside the city limits it is known Maryland Route 32 is a highway in central Maryland that connects Westminster, in Carroll County, to Anne Arundel County (near Annapolis Maryland Route 100 is a major east-west highway connecting US The Baltimore-Washington Parkway is a Freeway in the US state of Maryland, running southwest from Baltimore to Washington D The Baltimore-Washington Parkway is a Freeway in the US state of Maryland, running southwest from Baltimore to Washington D Maryland Route 355 is a north-south road in western central Maryland. State Route 267 is a primary State highway in the US state of Virginia. State Route 28 is a primary State highway that traverses the counties of Loudoun, Fairfax, Prince William, and Fauquier in the State Route 7 is a major primary State highway and busy commuter route in Northern Virginia, United States. State Route 9 is a major east-west primary State highway in the Loudoun Valley of Loudoun County Virginia, United States. West Virginia Route 9 is a major east-west State highway located in the eastern extents of West Virginia 's Eastern Panhandle. Table of United States Metropolitan Statistical Areas|Table of United States Core Based Statistical AreasIn the United States, the Office of Management and Budget (OMB has produced The National Capital Region of the United States consists of Washington D The largest contiguous public parks-preserves within of either Baltimore Md
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