Illinois Black or African American Alone Population By County in 2020

Updated on July 31, 2024.

Based on the US Census Vintage data estimates, in 2020, the Black or African American Alone population in Illinois was 1,878,233 and represented 14.69% of the total Illinois population (12,790,357).

Among Illinois counties, Cook County had the highest number of people who identified as Black or African American Alone (1,245,792), followed by Will County (86,036), and St. Clair County (78,782). Calhoun County had the lowest (24).

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 2020
Illinois Black or African American Alone Population By County in 2020
County
Black Alone Population
% of County Population
Cook 1,245,792 23.67
Will 86,036 12.35
St. Clair 78,782 30.67
Lake 53,633 7.52
DuPage 49,794 5.35
Winnebago 40,666 14.27
Peoria 34,444 19
Kane 30,710 5.95
Champaign 28,879 14.04
Sangamon 26,065 13.29
Madison 24,107 9.07
Macon 18,829 18.15
Rock Island 16,527 11.45
Kankakee 16,321 15.22
McLean 14,668 8.58
Kendall 11,053 8.35
Vermilion 10,349 13.98
DeKalb 8,434 8.41
Jackson 8,177 15.46
McHenry 5,553 1.79
Stephenson 4,643 10.43
Knox 4,203 8.44
Williamson 3,278 4.88
Jefferson 3,098 8.37
LaSalle 2,988 2.73
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