The U.S. Census Bureau predicts that life expectancy in the United States will be in the mid-80s by 2050 ( up from 77.85 in 2006 ) and will top out eventually in the low 90s , barring major scientific advances that can change the rate of human aging itself , as opposed to merely treating the effects of aging as is done today . The U.S. Census Bureau view on the future of longevity is that life expectancy in the United States will be in the mid-80s by 2050 ( up from 77.85 in 2006 ) and will top out eventually in the low 90s , barring major scientific advances that can change the rate of human aging itself , as opposed to merely treating the effects of aging as is done today .