When it comes to population growth, though, the Southwest is the clearest beneficiary of America’s changing demographics. While West Virginia, Illinois, New York, and a few New England states actually shrunk over the last decade, nearly all states between Washington and Texas expanded significantly. Utah led the way at 17.1% population growth between 2010 and 2020, followed by Texas (16.3%), Idaho (16.3%), Nevada (16.1%), Arizona (15.8%), Florida (15.3%), and Colorado (15.1%). Among the most-cited reasons for migration to these states are a lower cost of living and more favorable business conditions. The interior western states have also gained from residents moving out of California.