Depending on various factors, different regional divisions exist however: theU.S. Bureau of Labor Statistics in its newest regional division excludes New York from the region;[4] theU.S. Census Bureau excludes Delaware, Maryland, Virginia and West Virginia from the region;[5]USGS defines the region by watersheds thus additionally including North Carolina;[6] theEPA excludes both New York and New Jersey;[7] theU.S. Maritime Administration excludes upper New Jersey and New York;[8] the Office of Small Business Programs of theU.S. Department of Defense excludes New York.[9] When discussing climate,Connecticut is sometimes included, since its climate is closer to the Mid-Atlantic than the rest of theNew England region.[citation needed]
As of the2020 census, the region had a population of 60,783,913, representing slightly over 18% of the nation's population. The Mid-Atlantic is a relatively affluent region of the nation; nearly half of the nation's 100highest-income counties based onmedian household income are located in the Mid-Atlantic, and 33 of the nation's top 100 counties based onper capita income are in the region. Most of the Mid-Atlantic states rank among the 15highest-income states in the nation by both median household income and per capita income.
Following the American Revolutionary War, the Mid-Atlantic region hosted each of thehistoric capitals of the United States. The nation's capital was constructed inWashington, D.C. in the late 18th century, and relocated there from Philadelphia in 1800.
In the early part of the 19th century, New York and Pennsylvania overtook Virginia as the nation's two most populous states, and the Mid-Atlantic region overtookNew England as the most important trading and industrial center in the nation. During this period, large numbers ofGerman,Irish,Italian,Jewish,Polish, and otherimmigrants arrived in the region's coastal cities, includingBaltimore,Newark,New York City, Philadelphia, and interior cities such asPittsburgh, andRochester,Albany, andBuffalo, the latter of which is also included in theGreat Lakes region, with their skyscrapers and subways, which emerged as icons ofmodernity and American economic and cultural power in the 20th century.
In the late 19th century, the region played a vital and historic role in the development ofAmerican culture, commerce, trade, andindustry sectors.[11]
TheNortheast Corridor andInterstate 95 in the region link an almost contiguous urban region, which includes large and small cities and their respective suburbs and forms theNortheast megalopolis, one of the world's most important concentrations of finance, media, communications,education, medicine, and technology.
Definitions of the geographic components of the Mid-Atlantic region differ slightly among sources.[15] Generally speaking, the region is inclusive of the states of Delaware, Maryland, New Jersey, New York, Pennsylvania, Virginia, and West Virginia, and the federal district of the District of Columbia, with some additional sources including or excluding other areas in parts of the Northeast region and theSouth Atlantic states, for practical reasons.[4][3][5][6][7][8][9]
West Virginia and Virginia are atypical of this region in a few ways. These states both primarily lie within theSouthern American dialect region,[16] and the major religious tradition is largelyEvangelical Christian, with 30% in Virginia and 39% in West Virginia identifying as evangelicals.[17] Although a few of West Virginia's eastern panhandle counties may be considered part of theWashington metropolitan area, the state is largely rural and there are no major or even large cities.[18]
AUSGS fact sheet on the Mid-Atlantic region's groundwater[19]
An 1897 map displaying a broad definition of the Mid-Atlantic region
An 1886 Harper's School Geography map showing the region, which excludesVirginia andWest Virginia
Shipping and trade have been important to the Mid-Atlantic economy since the beginning of the colonial era. The explorerGiovanni da Verrazzano was the first European to see the region in 1524.Henry Hudson later extensively explored that region in 1611 and claimed it for the Dutch, who then created a fur-trading post inAlbany in 1614.Jamestown, Virginia was the first permanent English colony in North America, it was established seven years earlier in 1607.
From early colonial times, the Mid-Atlantic region was settled by a wider range of European people than in New England or the South. The DutchNew Netherland settlement along theHudson River inNew York City andNew Jersey, and for a time,New Sweden along theDelaware River inDelaware, divided the two great bulwarks of English settlement from each other. The original English settlements in the region notably provided refuge to religious minorities,Maryland toRoman Catholics andPennsylvania toQuakers andAnabaptistPennsylvania Dutch. In time, all these settlements fell under English colonial control, but the region continued to be a magnet for people of diverse nationalities.
While early settlers were mostly farmers, traders, and fishermen, the Mid-Atlantic states provided the young United States withheavy industry and served as the "melting pot" of newimmigrants from Europe. Cities grew along major ports, shipping routes, and waterways, including New York City andNewark on opposite sides of theHudson River, Philadelphia on the Delaware River,Allentown on theLehigh River, andBaltimore on theChesapeake Bay.
Two high-level professional tennis tournaments are held in the region. TheUS Open, held in New York, is one of the four Grand Slam tennis tournaments, whereas theWashington Open is part of theATP Tour 500 series andWTA 250 series.
With a GDP nominal of over $5.2 trillion, the Mid-Atlantic economy would be third-largest in the world if calculated separately, only behind the remaining United States and China and nearly $1 trillion larger than next place Japan. This economic prosperity is buoyed by a significant financial services and banking sector, healthcare and chemicals industry, and telecommunications and entertainment conglomerates.
According to the Global Financial Centres Index,[22] the Mid-Atlantic region is home to the leading financial center in the world (New York) at #1, with Washington also present at #15.
Notable companies (over $100 billion market cap) headquartered in the region include:
^abcEarl A. Greene et al."Ground-Water Vulnerability to Nitrate Contamination in the Mid-Atlantic Region".Archived November 17, 2017, at theWayback MachineUSGS Fact Sheet FS 2004-3067. 2005. Retrieved April 25, 2013. Note: Although the locator map appears to exclude part of northwestern Pennsylvania, other more detailed maps in this article include all of the state. Often, when discussing climate, southern Connecticut is included with the Middle Atlantic.
^abcEPA Region 3 (Mid-Atlantic) | Serving Delaware, District of Columbia, Maryland, Pennsylvania, Virginia, West Virginia and 7 federally recognized tribes. U.S. Environmental Protection Agency (EPA). (n.d.).https://www.epa.gov/aboutepa/epa-region-3-mid-atlantic
^abU.S. Department of Defense - Office of Small Business Programs."Mid-Atlantic Regional Council".business.defense.gov. Retrieved2024-01-14.{{cite web}}:|last= has generic name (help)
^Labov, William, Sharon Ash and Charles Boberg,Atlas of North American English: Phonetics, Phonology and Sound Change, Mouton de Gruyter, 2005Southern Regional MapArchived June 5, 2017, at theWayback Machine
Bodle, Wayne, "The Mid-Atlantic and the American Revolution",Pennsylvania History 82 (Summer 2015), 282–99.
Heineman, Kenneth J., "The Only Things You Will Find in the Middle of the Road are Double Yellow Lines, Dead Frogs, and Electoral Leverage: Mid-Atlantic Political Culture and Influence across the Centuries",Pennsylvania History, 82 (Summer 2015), 300–13.
Landsman, Ned C.Crossroads of Empire: The Middle Colonies in British North America (2010)
Longhurst, James."'Typically American': Trends in the History of Environmental Politics and Policy in the Mid-Atlantic Region".Pennsylvania History: A Journal of Mid-Atlantic Studies 79.4 (2012): 409–427.
Magoc, Chris J., "In Search of a Useable—and Hopeful—Environmental Narrative in the Mid-Atlantic",Pennsylvania History, 82 (Summer 2015), 314–28.
Mancall, Peter C., Joshua L. Rosenbloom, and Thomas Weiss. "Exports from the Colonies and States of the Middle Atlantic Region 1720–1800".Research in Economic History 29 (2013): 257–305.
Marzec, Robert.The Mid-Atlantic Region: The Greenwood Encyclopedia of American Regional Cultures (2004)
Rosenbloom, Joshua L., and Thomas Weiss. "Economic growth in the Mid-Atlantic region: Conjectural estimates for 1720 to 1800".Explorations in Economic History 51 (2014): 41–59.