Illinois Black or African American Alone Population By County in 2021

Based on the US Census Vintage data estimates, in 2021, the Black or African American Alone population in Illinois was 1,870,064 and represented 14.74% of the total Illinois population (12,686,469).

Among Illinois counties, Cook County had the highest number of people who identified as Black or African American Alone (1,228,018), followed by Will County (87,750), and St. Clair County (78,479). Calhoun County had the lowest (26).

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.