German Americans are citizens of the United States of German ancestry and comprise about 50 million people, or 17% of the U.S. population, the country"s largest self-reported ancestral group.[4] California, Texas and Pennsylvania have the largest numbers of German origin, although upper Midwestern states, including Ohio, Iowa, Minnesota, Wisconsin, Nebraska, and the Dakotas, have the highest proportion of German Americans at over one-third.[5] According to American Community Survey in 2010 data, Americans reporting German ancestry made up an estimated 17.1% of the total U.S. population, and form the largest ancestry group ahead of Irish Americans, African Americans and English Americans.