The U.S. Census Bureau estimates that there are 247,813,910 adults living in the United States. The total population was estimated at 321,418,820 people, with 77.1 percent of those people being over. Definitions: Population by child and adult categories. Data presented for 2010 through 2018 are Vintage 2018 population estimates. Each year the U.S. Census Bureau revises their post-2010 estimates. Therefore, data presented here may differ from previously published estimates.
United States: Population growth from 2007 to 2017 (compared to the previous year) Resident population of the U.S. in 2018, by state (including the District of Columbia) (in millions. Population ages 65 and above (% of total) Population growth (annual %) Population, male (% of total) Postnatal care coverage (% mothers) Prevalence of HIV, female (% ages 15-24) Prevalence of HIV, male (% ages 15-24) Prevalence of HIV, total (% of population ages 15-49) Prevalence of overweight, female (% of female adults).