Metropolitan area population estimates for July 1, 2011 are now available from the Census Bureau. These are the first estimates of metropolitan populations since the 2010 census. They show slowing growth in many once rapidly growing many metropolitan areas, according to the bureau. Of the 50 fastest-growing metros between 2000 and 2010, only 24 were on the list in the 2010-11 time period.
That said, there is much inertia in demographic change (which is why demographics are an excellent tool for business planning), and many areas supposedly devastated by the Great Recession and the collapse of the housing bubble are still growing impressively such as Miami (31st in percent growth between 2010 and 2011), Riverside (58th), and Atlanta (61st). Even Las Vegas continues to grow.
Source: Census Bureau, Population Estimates: Metropolitan and Micropolitan Statistical Areas