Illinois Black or African American Alone Population By County in 2021

Updated on July 31, 2024.

Based on the US Census Vintage data estimates, in 2021, the Black or African American Alone population in Illinois was 1,863,934 and represented 14.69% of the total Illinois population (12,690,341).

Among Illinois counties, Cook County had the highest number of people who identified as Black or African American Alone (1,222,883), followed by Will County (87,672), and St. Clair County (78,265). Calhoun County had the lowest (27).

In the map below, we show the number and percentage of each county's Black or African American Alone population, as well as the gender percentages when you interact with the map. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

You can see similar information for other states and also by state for the United States.

You can also see similar information for other racial and ethnicity groups in Illinois.

See this for other years:
Illinois Black or African American Alone Population By County in 2021
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Illinois Black or African American Alone Population By County in 2021
County
Black Alone Population
% of County Population
Cook 1,222,883 23.6
Will 87,672 12.54
St. Clair 78,265 30.7
Lake 54,019 7.58
DuPage 50,209 5.42
Winnebago 40,578 14.32
Peoria 34,309 19.1
Kane 30,698 5.95
Champaign 29,566 14.31
Sangamon 26,509 13.57
Madison 24,576 9.28
Macon 18,840 18.36
Rock Island 16,903 11.83
Kankakee 16,298 15.29
McLean 15,162 8.86
Kendall 11,855 8.78
Vermilion 10,399 14.21
DeKalb 8,860 8.82
Jackson 8,182 15.55
McHenry 5,826 1.87
Stephenson 4,545 10.32
Knox 4,247 8.61
Williamson 3,361 5.03
LaSalle 3,217 2.95
Jefferson 3,124 8.47
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