United States

Ethnic distribution

After decades of immigration and acculturation, many U.S. citizens can trace no discernible ethnic identity, describing themselves generically only as “American,” while others claim mixed identities. The 2000 U.S. census introduced a new category for those who identified themselves as a member of more than one race, and, of 281.4 million counted, 2.4 percent chose this multiracial classification. Ten years later, in the 2010 census, those figures had grown to 2.9 percent of 308.7 million.

United States: Population by race and Hispanic originEncyclopædia Britannica, Inc.