| Rank |
County |
Percentage of Black or African American Residents |
| 1 |
Alexander County, Illinois
|
36.0%
|
| 2 |
Pulaski County, Illinois
|
33.0%
|
| 3 |
St Clair County, Illinois
|
30.6%
|
| 4 |
Cook County, Illinois
|
24.8%
|
| 5 |
Brown County, Illinois
|
18.9%
|
| 6 |
Peoria County, Illinois
|
17.9%
|
| 7 |
Macon County, Illinois
|
16.7%
|
| 8 |
Kankakee County, Illinois
|
15.5%
|
| 9 |
Jackson County, Illinois
|
14.6%
|
| 10 |
Vermilion County, Illinois
|
13.3%
|
| 11 |
Champaign County, Illinois
|
12.7%
|
| 12 |
Winnebago County, Illinois
|
12.6%
|
| 13 |
Sangamon County, Illinois
|
12.0%
|
| 14 |
Will County, Illinois
|
11.6%
|
| 15 |
Randolph County, Illinois
|
10.0%
|
| 16 |
Lawrence County, Illinois
|
10.0%
|
| 17 |
Stephenson County, Illinois
|
9.4%
|
| 18 |
Rock Island County, Illinois
|
9.3%
|
| 19 |
Jefferson County, Illinois
|
8.8%
|
| 20 |
Perry County, Illinois
|
8.7%
|
| 21 |
Johnson County, Illinois
|
8.2%
|
| 22 |
Madison County, Illinois
|
8.0%
|
| 23 |
Logan County, Illinois
|
7.9%
|
| 24 |
Knox County, Illinois
|
7.7%
|
| 25 |
McLean County, Illinois
|
7.6%
|
| 26 |
Lake County, Illinois
|
7.3%
|
| 27 |
DeKalb County, Illinois
|
6.9%
|
| 28 |
Pope County, Illinois
|
6.8%
|
| 29 |
Bond County, Illinois
|
6.5%
|
| 30 |
Morgan County, Illinois
|
6.2%
|
| 31 |
Kendall County, Illinois
|
6.1%
|
| 32 |
Kane County, Illinois
|
6.0%
|
| 33 |
Massac County, Illinois
|
5.8%
|
| 34 |
McDonough County, Illinois
|
5.4%
|
| 35 |
Livingston County, Illinois
|
5.2%
|
| 36 |
Lee County, Illinois
|
5.2%
|
| 37 |
DuPage County, Illinois
|
5.0%
|
| 38 |
Crawford County, Illinois
|
4.8%
|
| 39 |
Fayette County, Illinois
|
4.6%
|
| 40 |
Williamson County, Illinois
|
4.1%
|
| 41 |
Saline County, Illinois
|
4.1%
|
| 42 |
Marion County, Illinois
|
4.1%
|
| 43 |
Coles County, Illinois
|
4.0%
|
| 44 |
Clinton County, Illinois
|
3.8%
|
| 45 |
Cass County, Illinois
|
3.7%
|
| 46 |
Fulton County, Illinois
|
3.7%
|
| 47 |
Adams County, Illinois
|
3.6%
|
| 48 |
Schuyler County, Illinois
|
3.3%
|
| 49 |
Montgomery County, Illinois
|
3.3%
|
| 50 |
Boone County, Illinois
|
2.5%
|
| 51 |
LaSalle County, Illinois
|
2.2%
|
| 52 |
Warren County, Illinois
|
2.1%
|
| 53 |
Pike County, Illinois
|
1.8%
|
| 54 |
Henry County, Illinois
|
1.8%
|
| 55 |
Whiteside County, Illinois
|
1.6%
|
| 56 |
Christian County, Illinois
|
1.5%
|
| 57 |
Grundy County, Illinois
|
1.4%
|
| 58 |
McHenry County, Illinois
|
1.3%
|
| 59 |
Tazewell County, Illinois
|
1.2%
|
| 60 |
Union County, Illinois
|
1.1%
|
| 61 |
Ogle County, Illinois
|
1.0%
|
| 62 |
Greene County, Illinois
|
1.0%
|
| 63 |
Macoupin County, Illinois
|
1.0%
|
| 64 |
Menard County, Illinois
|
1.0%
|
| 65 |
Iroquois County, Illinois
|
1.0%
|
| 66 |
Carroll County, Illinois
|
0.9%
|
| 67 |
Bureau County, Illinois
|
0.8%
|
| 68 |
Washington County, Illinois
|
0.8%
|
| 69 |
Wabash County, Illinois
|
0.8%
|
| 70 |
Ford County, Illinois
|
0.8%
|
| 71 |
De Witt County, Illinois
|
0.7%
|
| 72 |
Woodford County, Illinois
|
0.6%
|
| 73 |
Jersey County, Illinois
|
0.6%
|
| 74 |
Jo Daviess County, Illinois
|
0.6%
|
| 75 |
Putnam County, Illinois
|
0.6%
|
| 76 |
Richland County, Illinois
|
0.6%
|
| 77 |
Edgar County, Illinois
|
0.5%
|
| 78 |
Hamilton County, Illinois
|
0.5%
|
| 79 |
Mason County, Illinois
|
0.5%
|
| 80 |
Franklin County, Illinois
|
0.5%
|
| 81 |
Edwards County, Illinois
|
0.5%
|
| 82 |
Clark County, Illinois
|
0.5%
|
| 83 |
Clay County, Illinois
|
0.5%
|
| 84 |
Douglas County, Illinois
|
0.5%
|
| 85 |
Piatt County, Illinois
|
0.5%
|
| 86 |
White County, Illinois
|
0.5%
|
| 87 |
Stark County, Illinois
|
0.5%
|
| 88 |
Hardin County, Illinois
|
0.5%
|
| 89 |
Moultrie County, Illinois
|
0.4%
|
| 90 |
Mercer County, Illinois
|
0.4%
|
| 91 |
Marshall County, Illinois
|
0.4%
|
| 92 |
Scott County, Illinois
|
0.4%
|
| 93 |
Gallatin County, Illinois
|
0.4%
|
| 94 |
Wayne County, Illinois
|
0.4%
|
| 95 |
Cumberland County, Illinois
|
0.4%
|
| 96 |
Monroe County, Illinois
|
0.3%
|
| 97 |
Shelby County, Illinois
|
0.3%
|
| 98 |
Henderson County, Illinois
|
0.3%
|
| 99 |
Effingham County, Illinois
|
0.3%
|
| 100 |
Hancock County, Illinois
|
0.3%
|
| 101 |
Calhoun County, Illinois
|
0.2%
|
| 102 |
Jasper County, Illinois
|
0.2%
|