There are 63 metropolitan areas in the U.S. (out of 382 total) that saw their populations grow by 10 percent or more from 2010 through mid-2017, according to estimates compiled by the Census Bureau. That compares with an increase of 5.5 percent for the nation as a whole, and 6.5 percent for its metropolitan areas — which, just to be clear on what we’re talking about, are defined as “one or more counties that contain a city of 50,000 or more inhabitants, or contain a Census Bureau-defined urbanized area and have a total population of at least 100,000 (75,000 in New England).”
