Those projections, which include four different scenarios for population growth, estimate that today's minority ethnic groups will soon account for at least half of the under-18 population, either in 2018 or 2019.
"This is going to start from the bottom of the age distribution and move its way up," said William Frey, demographer and senior fellow for the Brookings Institution. "All of these projections show we're moving to greater diversity in the United States."
Already, more than half of American babies being born belong to racial and ethnic groups traditionally thought of as "minorities" -- which means it could soon be time to toss that word out completely.
By the time those kids grow up to become adults -- sometime between 2036 and 2042 -- everyone in the working-age population (ages 18 to 64) will be a member of a group that comes up short of the 50% line.
