Since 2010, urban inner rings, including central business districts, accounted for barely 10 percent of population growth in the nation’s 53 largest metropolitan areas. More revealing still, the country’s three largest metropolitan areas — New York, Los Angeles, and Chicago—are now losing population. Since 2012, suburbs and exurbs, which have seven times as many people as the core, are again growing faster. Suburbs are also seeing a strong net movement among educated people, those earning over $75,000 and especially those between the ages of 30 and 44. – The Daily Beast