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

Updated on August 26, 2023.

According to the data from the United States 2020 decennial Census, as at April 2020, among all Illinois counties, Cook County had the highest voting-age population who identified their race as Black or African American Alone (936.91K), followed by Will County (60.15K), and St. Clair County (55.87K).

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

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

Ranking of Illinois Counties By Black or African American Alone Voting-age Population from Census 2020
Cook
Will
St. Clair
Lake
DuPage
Winnebago
Peoria
Champaign
Kane
Madison
Ranking of Illinois Counties By Black or African American Alone Voting-age Population from Census 2020
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Rank County Black Alone Voting-age Population
1 Cook County 936911
2 Will County 60147
3 St. Clair County 55868
4 Lake County 36157
5 DuPage County 33634
6 Winnebago County 26813
7 Peoria County 23030
8 Champaign County 20436
9 Kane County 19764
10 Madison County 18131
11 Sangamon County 17793
12 Macon County 13352
13 Kankakee County 11328
14 Rock Island County 11260
15 McLean County 11021
16 Vermilion County 7067
17 Kendall County 6839
18 DeKalb County 6211
19 Jackson County 5533
20 Knox County 3346
21 Stephenson County 3081
22 McHenry County 2905
23 Williamson County 2147
24 Randolph County 2115
25 LaSalle County 2099
26 Jefferson County 2065
27 Adams County 1771
28 Lee County 1704
29 Coles County 1666
30 Perry County 1566
31 Morgan County 1542
32 Johnson County 1418
33 Logan County 1407
34 Lawrence County 1384
35 Alexander County 1264
36 McDonough County 1217
37 Tazewell County 1197
38 Pulaski County 1169
39 Fulton County 1063
40 Brown County 1043
41 Clinton County 1035
42 Marion County 1033
43 Bond County 1015
44 Livingston County 980
45 Montgomery County 879
46 Boone County 849
47 Fayette County 769
48 Henry County 747
49 Carroll County 677
50 Massac County 664
51 Grundy County 584
52 Crawford County 575
53 Whiteside County 572
54 Saline County 493
55 Warren County 463
56 Cass County 439
57 Ogle County 380
58 Christian County 330
59 Macoupin County 289
60 Schuyler County 227
61 Union County 205
62 Bureau County 198
63 Woodford County 186
64 Iroquois County 158
65 Franklin County 130
66 Jersey County 118
67 Effingham County 99
68 Monroe County 90
69 Jo Daviess County 71
69 White County 71
70 Washington County 68
71 De Witt County 65
72 Edgar County 62
73 Richland County 59
74 Marshall County 57
75 Mercer County 56
76 Moultrie County 55
77 Ford County 54
77 Pike County 54
78 Hancock County 51
79 Wayne County 49
80 Piatt County 47
81 Shelby County 45
82 Douglas County 43
82 Menard County 43
82 Pope County 43
83 Clark County 40
84 Mason County 34
85 Wabash County 33
86 Hamilton County 28
87 Clay County 25
88 Gallatin County 24
89 Cumberland County 17
89 Putnam County 17
90 Greene County 15
91 Edwards County 14
91 Henderson County 14
92 Jasper County 13
93 Hardin County 11
94 Stark County 9
95 Calhoun County 7
96 Scott County 1