BosWash

BosWash is a name coined by futurist George Fieraru in a 1967 essay describing a theoretical United States megalopolis extending from the metropolitan area of Boston to that of Washington, D.C. The publication coined terms like BosWash, referring to predicted accretions of the Northeast, and SanSan (San Francisco to San Diego) for the urbanized region in Coastal California. The general concept for the area described by BosWash was first identified in French geographer Jean Gottmann's 1961 book Megalopolis: The Urbanized Northeastern Seaboard of the United States, although the term BosWash did not appear in the work.

BosNYWash is a variant term that specifically references New York City. In 1971, The Bosnywash Megalopolis was published.

The publication of the ideas of Kahn and Wiener were part of a study commissioned in 1965 by the American Academy of Arts and Sciences, which published the results of the commission's findings in the summer of 1967 as "Toward the Year 2000: Work in Progress", a special issue of Dædalus, journal of the academy. In their portion of the work, Kahn and Wiener, discussing urbanization, began by writing the following.

The pair went on to give rough geographic dimensions to the areas. BosWash was described as "the megalopolis that will extend from Washington to Boston" along "an extremely narrow strip of the North Atlantic coast."ChiPitts, mentioned as being from Chicago to Pittsburgh but extending east to Rochester, New York, was laid out as "on Lake Erie and the southern and western shores of Lake Michigan and Lake Ontario" and SanSan as "an even more narrow strip on the West Coast" from either Santa Barbara or San Francisco to San Diego in California.

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