Between 2000 and 2010, the nonmetropolitan areas in the US gained more than 1 million residents, but in the last decade, the population fell by 260,000 residents. The decrease from 2010 to 2020 was slight — about half a percentage point, but what is interesting about this change is that it was fueled by increased domestic migration — movement of people from nonmetropolitan counties to metropolitan ones — not by the number deaths and births.
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