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The numbers are based partly on an analysis by the Population Reference Bureau. The data were supplemented with calculations by Robert Lang, a sociology professor at the University of Nevada-Las Vegas, and William H. Frey, a demographer at the Brookings Institution. "Rural" is generally defined as nonmetropolitan areas with fewer than 50,000 people. While rural America shrinks, larger U.S. metro areas have enjoyed double-digit percentage gains in population over the past several decades. Since 2000, metros grew overall by 11 percent with the biggest gains in suburbs or small- or medium-sized cities. In fact, of the 10 fastest-growing places, all were small cities incorporated into the suburbs of expanding metro areas, mostly in California, Arizona and Texas. In all, the share of Americans living in suburbs has climbed to an all-time high of 51 percent. Despite sharp declines in big cities in the Northeast and Midwest since 2000 due to the recession, U.S. cities increased their share by 3 percentage points to 33 percent. "These new patterns suggest that there will be a blurring of boundaries as regions expand well beyond official government-defined definitions," Frey said. "People like to `have it all'
-- affordable housing in a smaller-town setting but in close proximity to jobs and big-city amenities such as specialized shopping, cultural events and major sports and entertainment venues."
"Many moderate-sized metro areas can fulfill all of these needs," he said. The Census Bureau will soon begin to define new "combined statistical areas"
-- often referred to by demographers as megapolitan areas or megalopolises
-- based on growth and overlapping commuter traffic. Some analysts point to a merger of areas between Austin and San Antonio, between Tampa and Orlando and possibly between Phoenix and Tucson, with the Washington-Baltimore region extending southward to Richmond, Va. These new megalopolises could help spur corporate and government investment in major cities and the growing small towns in between. "There's such a large share of population that is now in reach of a substantial metropolitan center due to transit systems and highways, that the traditional notion of small-town America is changing," said Lang, who has done extensive research on U.S. megapolitan and regional growth. "Fewer and fewer people live in the deeply rural places, and for most people in smaller towns, a big regional hospital or a Wal-Mart or strip mall is not too far away," he said. He and other demographers believe that rural areas will remain viable, although many will be swallowed up by booming metropolitan areas and linked into sprawling megalopolises. Far-flung rural counties boasting vacation and outdoor recreation also will continue as popular destination points for young couples, retirees and empty nesters. Lang said he hoped the growing convergence of major metro areas -- and smaller towns in between
-- will promote better regional planning and cooperation rather than leading to individual cities acting as rivals for new investment. He said such collaboration might mean development of more roads or regional high-speed rail, or new approaches to water and energy conservation in the Mountain West. ___ Online:
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