Reply 2021-07-25 The U.S. population growth rate hit its lowest level since the Great Depression, according to the 2020 U.S. Census. Over the past decade, the Great Recession and COVID-19 pandemic slowed immigration as well as caused many Americans to hold off on having kids. Find out what's happening in Chicago with free, real-time updates from Patch. Let's go! Population growth did not stagnate everywhere in the U.S., however. In fact, in nearly every state at least one major metro area reported a faster population growth rate from 2010 to 2020 than the comparable national rate of 6.7%. To determine the fastest growing city in each state, 24/7 Wall St. reviewed population data from the U.S. Census Bureau's Population and Housing Estimates Program. Metropolitan areas were ranked based on total population change from 2010 to 2020.