Right now, the foreign-born population is growing three times as fast as growth for Americans born in the U.S.
By 2060, that ratio will have fallen — to merely 2:1.
Here's the chart, from a new U.S. Census report.
The foreign-born population of the U.S. is projected to grow 20 percent between 2010 and 2020, while natives will have grown just 6.4 percent.
By 2060, the foreign-born population growth rate will fall to 8.2 percent, but will still be twice as much as natives, who will have grown 3.8 percent starting in 2050.
The Census does not offer any commentary on why this is occurring.
But the research group IHS Economics recently looked at the issue, and found that immigration will continue to be robust in the years ahead.
"…The scale of projected population outflows from …10 Latin American countries, the high propensity of migrants from these countries to move to the U.S., the expectation of continuing population movement from Puerto Rico to the U.S., and potential migration to the U.S. from other countries," all suggest continued or even elevated flows of immigrants, they said.
These immigrants will be responsible for keeping America's labor force robust, they said.
"As the growth of the population of working age slows and the annual increment to the labor force declines, immigration will become more important as a source of employment growth," they wrote. "By 2020 labor force growth is expected to slow to the point that the annual change in the labor force is roughly equal to the amount of net migration," and thereafter will outrank it through at least 2034.
Rob covers business, economics and the environment for Fusion. He previously worked at Business Insider. He grew up in Chicago.