Baltimore–Washington metropolitan area

The Baltimore–Washington metropolitan area (Baltimore-Washington Metropolitan Combined Statistical Area) is a combined statistical area consisting of the overlapping labor market region of the cities 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 fourth largest combined statistical area in the United States.[1][2]

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 (MSA), the Washington–Arlington–Alexandria, DC–VA–MD–WV MSA and the Baltimore–Columbia–Towson, MD MSA. In addition, six 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.[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, the Easton, MD micropolitan statistical area (µSA), and the Cambridge, MD 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 2012 Population Estimates is 9,331,587.[9][10][11][12][13][14][15] The most populous city is Washington, DC, with a population of 681,170.[16] The most populous county is Fairfax County, Virginia, with a population exceeding 1.1 million.

Baltimore–Washington Metropolitan Area
Baltimore's Inner Harbor
Baltimore's Inner Harbor
The National Mall in Washington
The National Mall in Washington
Downtown Rosslyn in Arlington
Downtown Rosslyn in Arlington
Coordinates: 38°58′N 77°19′W / 38.97°N 77.32°WCoordinates: 38°58′N 77°19′W / 38.97°N 77.32°W
CountryFlag of the United States.svg United States
State- Flag of the District of Columbia.svg District of Columbia
- Flag of Maryland.svg Maryland
- Flag of Virginia.svg Virginia
- Flag of Pennsylvania.svg Pennsylvania
- Flag of West Virginia.svg West Virginia
Constituent Metropolitan AreasWashington Metropolitan Area Baltimore Metropolitan Area
Principal citiesWashington, D.C.
Arlington, VA
Alexandria, VA
Baltimore, MD,
Annapolis, MD
Bethesda, MD
Chambersburg, PA
Columbia, MD
Easton, MD
Fairfax, VA
Falls Church, VA
Frederick, MD
Fredericksburg, VA
Gaithersburg, MD
Hagerstown, MD
Lexington Park, MD
Martinsburg, WV
Rockville, MD
Reston, VA
Silver Spring, MD
Towson, MD
Tysons, VA
Waynesboro, PA
Winchester, VA
 (2017 est.)
 • CSA
9,764,315 (4th)
Time zoneUTC-5 (EST)
 • Summer (DST)UTC-4 (EDT)
Map of Washington-Baltimore-Arlington CSA, 2012
Map of the current OMB-designated Washington-Baltimore-Arlington, DC-MD-VA-WV-PA Combined Statistical Area.

Components of the metropolitan area

The counties and independent cities and their groupings that comprise the metropolitan area are listed below with their 2012 population estimates. Central counties/cities (designated as such by OMB) for each MSA are shown in italics.

Regional organizations

Metropolitan Washington Council of Governments

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.[17]

The National Capital Region Transportation Planning Board, a component of MWCOG, is the federally designated Metropolitan Planning Organization for the metropolitan Washington area.[18]

Baltimore Metropolitan Council

The Baltimore Metropolitan Council is the equivalent organization for the Baltimore portion of the combined Baltimore–Washington metropolitan area.[19] 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.[20]

The Baltimore Regional Transportation Board is the federally recognized Metropolitan Planning Organization for transportation planning in the Baltimore region.[20]

List of principal cities

See List of cities in the Baltimore–Washington metropolitan area for a full list.[21]

Baltimore area

Washington area



Primary industries


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.

Notable company headquarters in the region

Numbers denote Fortune 500 ranking.


Baltimore area:

Washington area:

Washington, D.C.

Northern Virginia


Baltimore–Washington International
Reagan Terminal B-C
Reagan National Airport
Washington Dulles International Airport at Dusk
Dulles International
Metro Center upper level
Washington Metro
Capital Beltway from Metro bridge
The Capital Beltway (I-495) in Northern Virginia
The Baltimore Metro subway

Major airports

Rail transit systems

Major highways


U.S. Routes

State Routes

See also


  1. ^ "CSA Median household income". Archived from the original on 7 December 2012. Retrieved 16 November 2017.
  2. ^ "Raleigh-Durham area ranks third in U.S. for college degrees". Retrieved 16 November 2017.
  3. ^ "Archived copy" (PDF). Archived from the original (PDF) on 2017-01-18. Retrieved 2014-09-12.CS1 maint: Archived copy as title (link)
  4. ^ "Archived copy". Archived from the original on 2015-07-11. Retrieved 2015-07-21.CS1 maint: Archived copy as title (link)
  5. ^ "- Washington DC South". Retrieved 16 November 2017.
  6. ^ "King George County Department of Economic Development". King George County Department of Economic Development. Retrieved 16 November 2017.
  7. ^ Gardner, D'Vera Cohn and Amy (16 March 2006). "3 Virginia Exurbs Near Top of U.S. in Growth". Retrieved 16 November 2017.
  8. ^ "FAMPO Technical Committee - FAMPO". Retrieved 16 November 2017.
  9. ^ "Archived copy". Archived from the original on 2015-09-24. Retrieved 2017-12-05.CS1 maint: Archived copy as title (link)
  10. ^ "CO-EST2006-01-11.xls". Archived from the original on 29 June 2011. Retrieved 16 November 2017.
  11. ^ "CO-EST2006-01-24.xls". Archived from the original on 29 June 2011. Retrieved 16 November 2017.
  12. ^ "EST2006-01-51.xls". Archived from the original on 26 October 2008. Retrieved 16 November 2017.
  13. ^ "CO-EST2006-01-54.xls". Archived from the original on 29 June 2011. Retrieved 16 November 2017.
  14. ^ "Wayback Machine". 9 February 2006. Archived from the original on 9 February 2006. Retrieved 16 November 2017.
  15. ^ "List6.txt". Archived from the original on 20 April 2008. Retrieved 16 November 2017.
  16. ^ "QuickFacts District of Columbia". U.S. Census Bureau. December 20, 2016. Retrieved December 22, 2016.
  17. ^ "COG & Our Region - Metropolitan Washington Council of Governments". Retrieved 16 November 2017.
  18. ^ "Transportation Planning Board - Transportation - Metropolitan Washington Council of Governments". Retrieved 16 November 2017.
  19. ^ O'Leary, __Sara Ann. "Home - Baltimore Metropolitan Council". Retrieved 16 November 2017.
  20. ^ a b About BMC – Baltimore Metropolitan Council Archived 2007-05-01 at the Wayback Machine
  21. ^ "U.S. Census Bureau – Principal cities of metropolitan and micropolitan statistical areas". Retrieved 16 November 2017.
  22. ^ "Metropolitan And Micropolitan Statistical Areas And Principal Cities, November 2007, with codes". Retrieved 16 November 2017.
  23. ^ "Whiting-Turner Contracting on the Forbes America's Largest Private Companies List". Retrieved 16 November 2017.
  24. ^ Kazanjian, Glynis (September 6, 2018) "Foulger-Pratt and Partner Buy Discovery Headquarters in Downtown Silver Spring", Bethesda Magazine.
  25. ^ As according to Federal Aviation Administration CY 2011 Enplanement Data, BWI exceeded Dulles by less than 24,000 passengers. As of 2010, however, Dulles has an edge in international traffic.
Aberdeen, Maryland

Aberdeen is a city located in Harford County, Maryland, 26 miles (42 km) northeast of Baltimore. The population was 14,959 at the 2010 United States Census. Aberdeen is the largest municipality in Harford County.

Aberdeen is part of the Baltimore-Towson Metropolitan Statistical Area (MSA), which is the 20th-largest United States metropolitan area. The nearest city to Aberdeen is Havre de Grace, Maryland, 4.8 miles (7.7 km) to the northeast.

American Society of Addiction Medicine

The American Society of Addiction Medicine (ASAM) is an addiction medicine professional society representing over 6,000 physicians, clinicians and associated professionals with a focus on addiction and its treatment.

Annapolis, Maryland

Annapolis () is the capital of the U.S. state of Maryland, as well as the county seat of Anne Arundel County. Situated on the Chesapeake Bay at the mouth of the Severn River, 25 miles (40 km) south of Baltimore and about 30 miles (50 km) east of Washington, D.C., Annapolis is part of the Baltimore–Washington metropolitan area. Its population was measured at 38,394 by the 2010 census.

This city served as the seat of the Confederation Congress (former Second Continental Congress) and temporary national capital of the United States in 1783–1784. At that time, General George Washington came before the body convened in the new Maryland State House and resigned his commission as commander of the Continental Army. A month later, the Congress ratified the Treaty of Paris of 1783, ending the American Revolutionary War, with Great Britain recognizing the independence of the United States.

The city and state capitol was also the site of the 1786 Annapolis Convention, which issued a call to the states to send delegates for the Constitutional Convention to be held the following year in Philadelphia. Over 220 years later, the Annapolis Peace Conference was held in 2007. Annapolis is the home of St. John's College, founded 1696; the United States Naval Academy, established 1845, is adjacent to the city limits.

Ballston, Arlington, Virginia

Ballston is a neighborhood in Arlington County, Virginia and is home to the Ballston-MU station on the Orange Line and the Silver Line of the metro system.

Baltimore metropolitan area

The Baltimore–Columbia–Towson Metropolitan Statistical Area, also known as Central Maryland, is a Metropolitan Statistical Area (MSA) in Maryland as defined by the United States Office of Management and Budget (OMB). As of the 2010 Census, the combined population of the seven counties is 2,710,489. The MSA has the fourth-highest median household income in the United States, at $66,970 in 2012.

Bethesda, Maryland

Bethesda is an unincorporated, census-designated place in southern Montgomery County, Maryland, United States, located just northwest of the U.S. capital of Washington, D.C. It takes its name from a local church, the Bethesda Meeting House (1820, rebuilt 1849), which in turn took its name from Jerusalem's Pool of Bethesda. In Aramaic, beth ḥesda (ܒܝܬ ܚܣܕܐ) means "House of Mercy" and in Hebrew, beit ḥesed (בית חסד) means "House of Kindness". The National Institutes of Health main campus and the Walter Reed National Military Medical Center are in Bethesda, as are a number of corporate and government headquarters.

As an unincorporated community, Bethesda has no official boundaries. The United States Census Bureau defines a census-designated place named Bethesda whose center is located at 38°59′N 77°7′W. The United States Geological Survey has defined Bethesda as an area whose center is at 38°58′50″N 77°6′2″W, slightly different from the Census Bureau's definition. Other definitions are used by the Bethesda Urban Planning District, the United States Postal Service (which defines Bethesda to comprise the ZIP Codes 20810, 20811, 20813, 20814, 20815, 20816, and 20817), and other organizations. According to estimates released by the U.S. Census Bureau in 2013, the community had a total population of 63,374. Most of Bethesda's residents are in Maryland Legislative District 15.

Clarksville, Delaware

Clarksville is an unincorporated community in Baltimore Hundred, Sussex County, Delaware, United States located just west of Millville. It is centered, more or less, along Delaware Route 26. Many tourists from the Baltimore–Washington metropolitan area pass through the town on their way to and from the Delaware Beaches.The Blackwater Presbyterian Church and Spring Banke near Clarksville are listed on the National Register of Historic Places.

College Park, Maryland

The City of College Park is in Prince George's County, Maryland, United States, and is about 4 miles (6.4 km) from the northeast border of Washington, D.C. The population was 30,413 at the 2010 United States Census. It is best known as the home of the University of Maryland, College Park, and since 1994 the city has also been home to the National Archives at College Park, a facility of the U.S. National Archives, as well as to the National Oceanic and Atmospheric Administration (NOAA) Center for Weather and Climate Prediction (NCWCP).

Crystal City, Arlington, Virginia

Crystal City is an urban neighborhood in the southeastern corner of Arlington County, Virginia, south of downtown Washington, D.C. Due to its extensive integration of office buildings and residential high-rise buildings using underground corridors, travel between stores, offices, and residences is possible without going above ground; thus, a large part of Crystal City is an underground city.

Crystal City includes offices of numerous defense contractors, the United States Department of Labor, the United States Marshals Service and many satellite offices for The Pentagon. It is also the location of Ronald Reagan Washington National Airport.

Dulles Technology Corridor

The Dulles Technology Corridor is a business cluster containing many defense and technology companies, located in Northern Virginia near Washington Dulles International Airport. The area was called "The Silicon Valley of the East" by Atlantic magazine. It was dubbed the "Netplex" in a 1993 article by Fortune magazine. Another article in 2000 claimed that the area contained "vital electronic pathways that carry more than half of all traffic on the Internet. The region is home to more telecom and satellite companies than any other place on earth."The Dulles Technology Corridor is a descriptive term for a string of communities that lie along and between Virginia State Route 267 (the Dulles Toll Road and Dulles Greenway), and Virginia State Route 7 (Leesburg Pike and Harry Byrd Highway). It especially includes the communities, from east to west, of Tysons Corner, Reston, Herndon, Sterling, and Ashburn. These communities are in Fairfax and Loudoun counties, which are the second-highest and highest income counties in the U.S. as of 2011, coinciding with the national technology and local internet boom of the 1990s and local technology spending after the September 11, 2001 attacks.

List of cities in the Baltimore–Washington metropolitan area

This is a list of cities and municipalities in the Baltimore-Washington metropolitan area.

List of parks in the Baltimore–Washington metropolitan area

The list contains the largest contiguous public parks-preserves within 30 miles (48 km) of either Baltimore, Maryland or Washington, D.C., which is within the Baltimore–Washington metropolitan area.

Prince William Forest - Locust Shade, Virginia; 18,255 acres (74 km2) — about one-third is closed to the public

Patuxent Wildlife Research Refuge - Fran Uhler (Patuxent River Park), Maryland; 13,300 acres (54 km2) — about one-third is closed to the public

Seneca Creek - McKee-Beshers - C & O Canal - Germantown, Maryland / Algonkian, Virginia; 12,435 acres (50 km2)

Upper Patapsco, Maryland; 9,575 acres (39 km2)

Patuxent River Park - Merkle - Jug Bay Wetlands - House Creek, Maryland; 8,575 acres (35 km2)

Mason Neck - Accotink Bay - Pohick - Meadowwood - Gunston, Virginia; 7,690 acres (31 km2)

Patuxent River State Park, Maryland; 6,650 acres (27 km2)

Chapmans - Myrtle Grove - Mattawoman, Maryland; 6,278 acres (25 km2)

Sugarloaf Mountain - Monocacy River - C & O Canal, Maryland; 5,790 acres (23 km2)

Lower Gunpowder Falls, Maryland; 5,325 acres (22 km2)

Manassas Battlefield, Virginia; 4,355 acres (18 km2)

Little Bennett, Maryland; 3,700 acres (15 km2)

Great Falls, Virginia - C & O Canal, Maryland - Riverbend, Virginia - Scott's Run, Virginia - Carderock, Maryland; 3,440 acres (14 km2)

Lower Patapsco - Rockburn Branch, Maryland; 3,435 acres (14 km2)

Cedarville, Maryland; 2,848 acres (12 km2)

Smithsonian Environmental Research Center Maryland; 2,800 acres (11 km2) - limited public access

Upper Gunpowder Falls (Hereford), Maryland; 2,755 acres (11 km2)

Rock Creek Regional (Lake Needwood - North Branch); 2,670 acres (11 km2)

Susquehanna State Park, Maryland; 2,645 acres (11 km2)

Fountainhead, Virginia; 2,450 acres (10 km2)

Nanjemoy Creek, Maryland; 2,415 acres (10 km2) - generally closed to the public

Mid-Gunpowder Falls (Baldwin-Fork), Maryland; 2,300 acres (9 km2)

Eastern Neck, Maryland; 2,285 acres (9 km2)

Douglas Point - Mallows Bay - Purse State Park (Nanjemoy Wildlife Area), Maryland; 1,920 acres (8 km2)

Soldiers Delight, Maryland; 1,920 acres (8 km2) -------- Rock Creek Park, D.C.; 1,750 acres (7 km2)

National Harbor, Maryland

National Harbor is a census-designated place (CDP) in Prince George's County, Maryland, United States, located along the Potomac River near the Woodrow Wilson Bridge and just south of Washington, D.C.. It originated as a 300-acre (1.2 km2) multi-use waterfront development. The population was 3,788 at the 2010 census.

National Weather Service Baltimore/Washington

The National Weather Service Baltimore/Washington is a local office of the National Weather Service responsible for monitoring weather conditions in 44 counties in eastern West Virginia, northern and central Virginia, the majority of the state of Maryland, as well as the city of Washington, D.C.. Although labeled as the NWS Baltimore/Washington, its actual location is off Old Ox Road (Virginia State Route 606) in the Dulles section of Sterling, Virginia, adjacent to Washington Dulles International Airport.

The NWS Baltimore/Washington currently employs about 25 people including meteorologists, support personnel, and management staff, working rotating shifts 24 hours a day, 7 days a week.

Reston Town Center

Reston Town Center (also known as RTC and locally as simply, Town Center) is a mixed-use development featuring offices, retail stores, and restaurants in Reston, Virginia owned and managed primarily by Boston Properties.

Saint Luke Institute

Saint Luke Institute (SLI) is a private, licensed mental health education and treatment facility headquartered in Silver Spring, Maryland, US. The institute primarily serves Roman Catholic priests and religious women and men through integrated psychological and spiritual evaluations, residential care, continuing care, and outpatient therapy. Education in support of a healthy life and ministry for those in the Catholic Church is offered online and in-person through SLIconnect. Individuals come to Saint Luke for treatment for a variety of reasons, including depression, addictions, anxiety, boundary issues, and other mental and spiritual health needs. Saint Luke Center in Louisville, Kentucky, offers education, candidate assessments, and individual and group therapy.

Severna Park, Maryland

Severna Park is a census-designated place (CDP) in Anne Arundel County, Maryland, United States. Severna Park is part of the Baltimore-Washington Metropolitan Area, and is located approximately 8 miles (13 km) north of Annapolis, 17 miles (27 km) south of Baltimore, and 39 miles (63 km) east of Washington, D.C. Severna Park's population was 37,634 at the 2010 census.

University of Maryland University College

The University of Maryland University College (UMUC) is a public university focused on online education and headquartered in Adelphi, Maryland. UMUC offers classes and programs on campus in its Academic Center in Largo and at satellite campuses across the Baltimore-Washington Metropolitan Area, throughout Maryland, and in Europe, the Middle East, and Asia. Maryland Governor Larry Hogan approved a bill on April 18, 2019 that changes the name of the institution to the University of Maryland Global Campus, effective July 1, 2019.UMUC serves over 90,000 students worldwide and is one of the largest distance-learning institutions in the world. UMUC is open to all applicants, with a 100 percent acceptance rate for undergraduate programs. The university offers 120 academic programs in instructor-led and online classes, including bachelor's, master's, and doctoral degrees, as well as undergraduate and graduate certificates. UMUC is a member of the University System of Maryland, which includes eleven separate public universities in Maryland. University of Maryland University College (UMUC) is accredited by the Middle States Commission on Higher Education.

Washington metropolitan area

The Washington metropolitan area is the metropolitan area centered on Washington, D.C., the capital of the United States. The area includes all of the federal district and parts of the U.S. states of Maryland and Virginia, along with a small portion of West Virginia. It is part of the larger Baltimore–Washington metropolitan area.

The Washington metropolitan area is one of the most educated and most affluent metropolitan areas in the US. The metro area anchors the southern end of the densely populated Northeast megalopolis with an estimated total population of 6,216,589 as of the 2017 U.S. Census Bureau estimate, making it the sixth-largest metropolitan area in the nation and the largest metropolitan area in the Census Bureau's South Atlantic division.

Principal cities
Counties and
county equivalents*
Major metropolitan areas
(over 1,000,000)
Other cities
(over 100,000)
Metro areas
Metro areas
Largest cities
Metro areas
Largest cities
The 100 most populous metropolitan statistical areas of the United States of America


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