Ranking of Illinois Counties By Percentage of Voting-age Population that were Black or African American Alone from Census 2020

According to the data from the United States 2020 decennial Census, as at April 2020, among all Illinois counties, Alexander County had the highest percentage of its voting-age population that identified their race as Black or African American Alone (29.83%), followed by St. Clair County (28.35%), and Pulaski County (28.33%).

The chart below shows the top 10 counties, and the table below shows the ranking of all Illinois counties based on the percentage of the voting-age population that identified as Black or African American Alone.

You can see similar ranking information for other states. You can also see similar rankings of counties for other racial groups in Illinois.