Ranking of Iowa Counties By Non-Hispanic Voting-age Population from Census 2020

According to the data from the United States 2020 decennial Census, in April 2020, among all of Iowa counties, Polk County had the highest voting-age population who identified as Non-Hispanic (not hispanic or latino) (342.03K), followed by Linn County (171.26K), and Scott County (126.17K).

The chart below shows the top 10 counties, and the table below shows the ranking of all Iowa counties based on the voting-age population who identified as non-hispanic.

You can see similar ranking information for other states and also for the different racial groups in Iowa.