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|subdivision_type1 = U.S. state/federal district |subdivision_name1 = District of Columbia Virginia Maryland West Virginia |subdivision_type2 = |subdivision_name2 = ---- |subdivision_type3 = Principal municipalities |subdivision_name3 = Washington, Arlington, Alexandria |subdivision_name4 = |government_footnotes = |government_type = |leader_title = |leader_name = |leader_title1 = |leader_name1 = |leader_title2 = |leader_name2 = |leader_title3 = |leader_name3 = |leader_title4 = |leader_name4 = |established_title = |established_date = |established_title2 = |established_date2 = |established_title3 = |established_date3 = |area_magnitude = |unit_pref = |area_footnotes = (2010) |area_total_km2 = |area_land_km2 = |area_water_km2 = |area_total_sq_mi = |area_land_sq_mi = |area_water_sq_mi = |area_water_percent = |area_urban_km2 = |area_urban_sq_km = 3644.2 |area_metro_km2 = 14412 |area_metro_sq_mi = 5564.6 |area_blank1_title = |area_blank1_ mi2 = |area_blank2_title = |area_blank2_sq_mi = |population_as_of = 2014 |population_footnotes = 〔(Table of United States Metropolitan Statistical Areas)〕 |population_note = MSA = 2014, CSA = 2012, Urban & Densities = 2010 |population_total = 6,033,737 (7th) |population_density_km2 = 418.7 |population_density_sq_mi = 1,084 |population_metro = |population_density_metro_km2 = |population_density_metro_sq_mi = |population_urban = 4,586,770 (8th) |population_density_urban_km2 = |population_density_urban_sq_mi = |population_blank1_title = CSA |population_blank1 = 9,331,587 (4th) |population_blank2 = |population_density_blank1_km2 = |population_density_blank1_sq_mi = |timezone = ET |utc_offset = -5 |timezone_DST = EST |utc_offset_DST = -4 |latd= |latm= |lats= |latNS= |longd= |longm= |longs= |longEW= |elevation_footnotes = |elevation_m =0–716 |elevation_ft = 0–2,350 }} 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. The Washington metropolitan area is the most educated and, by some measures, the most affluent metropolitan area in the United States. , the population of the Washington metropolitan area was estimated to be 6,033,737, making it the largest metropolitan area in the Census' Southeast region and the seventh-largest metropolitan area in the country.〔(Annual Estimates of the Population of Metropolitan and Micropolitan Statistical Areas: April 1, 2000 to July 1, 2009 )〕 ==Nomenclature== The U.S. Office of Management and Budget defines the area as the Washington–Arlington–Alexandria, DC–VA–MD–WV metropolitan statistical area, a metropolitan statistical area used for statistical purposes by the United States Census Bureau and other agencies. The area includes as its principal cities Washington as well as the Virginia county of Arlington and city of Alexandria. The Office of Management and Budget also includes the metropolitan statistical area as part of the larger Baltimore–Washington metropolitan area, which has a population of 9,331,587 as of the 2012 Census Estimate.〔(State Totals: Vintage 2012 - U.S Census Bureau ). Census.gov. Retrieved on 2013-08-16.〕 The area is also sometimes referred to as the National Capital Region, particularly by federal agencies such as the Department of Homeland Security. Another term used to describe the region is the D.C. Area. The area is referred to by a few as the DMV, a shorthand for the District of Columbia, Maryland, and Virginia.〔(【引用サイトリンク】title=After initial obscurity, 'The DMV' nickname for Washington area picks up speed )〕 The area in the region that is surrounded by Interstate 495 is also referred to as being "inside the Beltway". The city of Washington, which is at the center of the area, is referred to as "the District" because it is the federal District of Columbia, and is not part of any state. The Virginian portion of the region is known as Northern Virginia. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Washington metropolitan area」の詳細全文を読む スポンサード リンク
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