| Rank |
County |
Housing Units |
| 1 |
Cook County, Illinois
|
2,175,941
|
| 2 |
DuPage County, Illinois
|
355,617
|
| 3 |
Lake County, Illinois
|
261,147
|
| 4 |
Will County, Illinois
|
238,371
|
| 5 |
Kane County, Illinois
|
183,179
|
| 6 |
Winnebago County, Illinois
|
125,884
|
| 7 |
Madison County, Illinois
|
117,246
|
| 8 |
St Clair County, Illinois
|
117,006
|
| 9 |
McHenry County, Illinois
|
116,213
|
| 10 |
Sangamon County, Illinois
|
89,893
|
| 11 |
Champaign County, Illinois
|
88,119
|
| 12 |
Peoria County, Illinois
|
83,067
|
| 13 |
McLean County, Illinois
|
70,183
|
| 14 |
Rock Island County, Illinois
|
65,758
|
| 15 |
Tazewell County, Illinois
|
57,701
|
| 16 |
Macon County, Illinois
|
50,197
|
| 17 |
LaSalle County, Illinois
|
49,975
|
| 18 |
Kankakee County, Illinois
|
45,321
|
| 19 |
DeKalb County, Illinois
|
41,377
|
| 20 |
Kendall County, Illinois
|
41,308
|
| 21 |
Vermilion County, Illinois
|
36,190
|
| 22 |
Williamson County, Illinois
|
30,503
|
| 23 |
Adams County, Illinois
|
29,830
|
| 24 |
Jackson County, Illinois
|
28,668
|
| 25 |
Whiteside County, Illinois
|
25,771
|
| 26 |
Knox County, Illinois
|
24,049
|
| 27 |
Coles County, Illinois
|
23,410
|
| 28 |
Ogle County, Illinois
|
22,596
|
| 29 |
Henry County, Illinois
|
22,188
|
| 30 |
Stephenson County, Illinois
|
22,033
|
| 31 |
Macoupin County, Illinois
|
21,499
|
| 32 |
Grundy County, Illinois
|
20,228
|
| 33 |
Boone County, Illinois
|
20,123
|
| 34 |
Franklin County, Illinois
|
18,504
|
| 35 |
Marion County, Illinois
|
18,241
|
| 36 |
Jefferson County, Illinois
|
16,847
|
| 37 |
Fulton County, Illinois
|
16,140
|
| 38 |
Livingston County, Illinois
|
15,890
|
| 39 |
Bureau County, Illinois
|
15,727
|
| 40 |
Christian County, Illinois
|
15,573
|
| 41 |
Morgan County, Illinois
|
15,467
|
| 42 |
Clinton County, Illinois
|
15,421
|
| 43 |
Woodford County, Illinois
|
15,213
|
| 44 |
Lee County, Illinois
|
15,038
|
| 45 |
Effingham County, Illinois
|
14,598
|
| 46 |
McDonough County, Illinois
|
14,402
|
| 47 |
Randolph County, Illinois
|
13,692
|
| 48 |
Jo Daviess County, Illinois
|
13,626
|
| 49 |
Monroe County, Illinois
|
13,539
|
| 50 |
Iroquois County, Illinois
|
13,425
|
| 51 |
Montgomery County, Illinois
|
13,122
|
| 52 |
Logan County, Illinois
|
12,100
|
| 53 |
Saline County, Illinois
|
11,545
|
| 54 |
Shelby County, Illinois
|
10,428
|
| 55 |
Jersey County, Illinois
|
9,876
|
| 56 |
Perry County, Illinois
|
9,364
|
| 57 |
Fayette County, Illinois
|
9,284
|
| 58 |
Hancock County, Illinois
|
9,262
|
| 59 |
Edgar County, Illinois
|
8,785
|
| 60 |
Crawford County, Illinois
|
8,611
|
| 61 |
Carroll County, Illinois
|
8,445
|
| 62 |
Douglas County, Illinois
|
8,380
|
| 63 |
Wayne County, Illinois
|
7,927
|
| 64 |
Union County, Illinois
|
7,906
|
| 65 |
Pike County, Illinois
|
7,898
|
| 66 |
Clark County, Illinois
|
7,724
|
| 67 |
Warren County, Illinois
|
7,652
|
| 68 |
De Witt County, Illinois
|
7,516
|
| 69 |
Richland County, Illinois
|
7,478
|
| 70 |
Mercer County, Illinois
|
7,363
|
| 71 |
Piatt County, Illinois
|
7,264
|
| 72 |
White County, Illinois
|
7,113
|
| 73 |
Massac County, Illinois
|
7,085
|
| 74 |
Bond County, Illinois
|
7,077
|
| 75 |
Mason County, Illinois
|
7,060
|
| 76 |
Lawrence County, Illinois
|
6,898
|
| 77 |
Washington County, Illinois
|
6,541
|
| 78 |
Clay County, Illinois
|
6,374
|
| 79 |
Greene County, Illinois
|
6,356
|
| 80 |
Moultrie County, Illinois
|
6,298
|
| 81 |
Ford County, Illinois
|
6,294
|
| 82 |
Marshall County, Illinois
|
5,882
|
| 83 |
Cass County, Illinois
|
5,808
|
| 84 |
Menard County, Illinois
|
5,656
|
| 85 |
Johnson County, Illinois
|
5,631
|
| 86 |
Wabash County, Illinois
|
5,538
|
| 87 |
Cumberland County, Illinois
|
4,846
|
| 88 |
Jasper County, Illinois
|
4,325
|
| 89 |
Hamilton County, Illinois
|
4,099
|
| 90 |
Alexander County, Illinois
|
3,924
|
| 91 |
Henderson County, Illinois
|
3,780
|
| 92 |
Schuyler County, Illinois
|
3,459
|
| 93 |
Edwards County, Illinois
|
3,167
|
| 94 |
Pulaski County, Illinois
|
3,120
|
| 95 |
Putnam County, Illinois
|
3,067
|
| 96 |
Calhoun County, Illinois
|
2,852
|
| 97 |
Gallatin County, Illinois
|
2,689
|
| 98 |
Stark County, Illinois
|
2,654
|
| 99 |
Pope County, Illinois
|
2,494
|
| 100 |
Hardin County, Illinois
|
2,476
|
| 101 |
Brown County, Illinois
|
2,449
|
| 102 |
Scott County, Illinois
|
2,442
|