The U.S. population has gotten older in the past two decades, with adults 65 or older growing by more than a third from 2010 to 2020, while the share of children under the age of 5 declined, according to Census Bureau data released May 25.
From 2000 to 2020, the median age continued to rise, while from 2010 to 2020, smaller cohorts of children were born, according to data from the 2020 Census Demographic and Housing Characteristics.
