Key findings about U.S. immigrants – May 3, 2017 – “The U.S. has more immigrants than any other country in the world. Today, more than 40 million people living in the U.S. were born in another country, accounting for about one-fifth of the world’s migrants in 2015. The population of immigrants is also very diverse, with just about every country in the world represented among U.S. immigrants. View interactive charts and detailed tables on U.S. immigrants. Pew Research Center regularly publishes statistical portraits of the nation’s foreign-born population, which include historical trends since 1960. Based on these portraits, here are answers to some key questions about the U.S. immigrant population.”