The precise boundaries of the northeastern megalopolis vary slightly by information source. At a minimum, it stretches from Boston to Washington, DC and some sources have it stretching as far north as Brunswick, ME.
A picture being worth 1,000 words, the U.S. Census choropleth map below, with each white dot representing population of 7.500 as of 2010, tells a pretty good story of where the country's population is. Note the extraordinary population just south of Maine. This juxtaposition of strikingly different population densities is a part of the reason we're known as "Vacationland".
Give Maine your tired of urban life, your poor of natural environment, your huddled masses yearning to breathe free and Maine will give you respite. That is the promise of Vacationland.
Do our representatives in Augusta really want to infest our incredible mountains, ridges, hilltops, forests, farmlands, seacoast and islands with giant out of place industrial wind installations and requisite transmission gashes all so that a small handful of super wealthy insiders in distant places can become yet wealthier at the expense of Mainers and our visitors who so faithfully depend on Maine being Maine? So far, the answer seems to be yes.
Note that because one white dot represents 7,500 people, it means that many of the white dots could represent far, far more. Considering this, the abovemap likely does not tell the full story as to the the extent of population difference between Maine and its neighbors.
EXPEDITED WIND MAP OF MAINE: http://www.maine.gov/dacf/lupc/projects/wind_expedited_area/Summary...