Northeast megalopolis includes Boston.
Megalopolis . Later , it was used by Jean Gottmann in his landmark 1961 study , Megalopolis : The Urbanized Northeastern Seaboard of the United States , to describe the chain of metropolitan areas along the northeastern seaboard of the U.S. extending from Boston , Massachusetts , through New York City , Philadelphia , Baltimore , and ending in Washington , D.C. and Northern Virginia . Northeast megalopolis . Gottmann concluded that the region 's cities , while discrete and independent , are uniquely tied to each other through the intermeshing of their suburban zones , taking on some characteristics of a single , massive city : a megalopolis .