Arizona Sun Corridor Cascadia Florida Front Range Great Lakes Gulf Coast Northeast Northern California Piedmont Atlantic Southern California Texas Triangle

US Megaregions

A Megaregion (sometimes referred to as a Megalopolis) is a large network of metropolitan regions that share several or all of the following:

  • Environmental systems and topography
  • Infrastructure systems
  • Economic linkages
  • Settlement and land use patterns
  • Culture and history
More than 70 percent of the nation's population and jobs are located in 11 Megaregions. Most of the nation's rapid population growth, and an even larger share of its economic expansion, is expected to occur in 11 megaregions. Megaregions are becoming the new competitive units in the global economy, characterized by the increasing movement of goods, people and capital among their metropolitan regions.
The megaregion concept provides cities and metropolitan regions a context within which to cooperate across jurisdictional borders, including the coordination of policies, to address specific challenges experienced at the megaregion scale, such as planning for high-speed rail, protecting large watersheds, and coordinating regional economic development strategies.

Megaregion NameMajor CitiesPopulation 2010Population 2025Population 2050% of Total US Pop.Growth RateTotal GDPPercentage US GDP
Arizona Sun Corridor Phoenix, Tucson56537667764211123197712117.9%$1910360000002%
Cascadia Portland,Seattle,Vancouver8367519874814311864378341.8%$3374050000003%
Florida Miami,Orlando,Tampa,Jacksonville172725952144965231122998680.2%$6080820000005%
Front Range Albuquerque,Santa Fe,Colorado Springs,Denver5467633692445710222370287%$2292020000002%
Great Lakes Chicago, Detroit, Pittsburgh, Cleveland, Minneapolis, St. Louis, Indianapolis5552529660678100712631851828.3%$207286900000017%
Gulf Coast Houston,New Orleans,Baton Rouge134149341633498723666122476.4%$5241220000004%
Northeast Boston, New York, Philadelphia, Baltimore, Washington D.C.5233212358400000708000001735.2%$292000000000020%
Northern California Oakland, Reno, Sacramento, San Jose, San Francisco140376051635087221159995550.7%$6225070000005%
Piedmont Atlantic (Charlanta) Atlanta, Birmingham, Raleigh-Durham, Charlotte176111622168744931342393678%$4857530000004%
Southern California Los Angeles, San Diego, Anaheim, Long Beach, Las Vegas243616422901056039381675861.7%$10360000000007%
Texas Triangle Austin, Dallas/Fort Worth, Houston, San Antonio197282442480956738132600693.3%$8175100000007%