There are 55.3 million Latinos in America, nearly triple the 1980 population, and those under 18 years old are the largest group, a demographic fact likely to influence the future of the country, according to Census figures.

A new analysis from the Pew Research Center, found that the vast majority are of “Mexican origin,” and most of the younger Latinos were born in the United States to immigrants. Hispanics represent over 17 percent of the total U.S. population and 21 percent of all millennials, said Pew.