2. U.S. Census Facts for Features 2017 nearly 18 percent of the U.S. population According to the United States Census Bureau près de 18 % de la population des Etats-Unis nearly 18% of the U.S. population nearly 18 percent of the U.S. population Censo de los Estados Unidos U.S. Census Bureau Hispanic Heritage 2017 63.4% of the total U.S. Hispanic population nearly 18% of the U.S. population Knapp 18 % der US-Bevölkerung data 2. U.S. Census Facts for Features 2017 nearly 18 percent of the U.S. population