Race and ethnicity in the United States: ancestry analysis of population (2010)

Fifteen largest ancestries in the United States in the 2010 census.

Reference 1: Number and Percent of total population.

Reference 2: German, African American, Irish, Mexican, English, American, Italian, Polish, French, Scottish, Scotch-Irish, Native American and Alaskan Native, Dutch, Puerto Rican and Norwegian.

Source: http://en.wikipedia.org/wiki/Race_and_ethnicity_in_the_United_States