Illinois / Counties by Population

Illinois Counties by Population

The data is from the US Census. Below are 102 Illinois counties ranked 1 through 102. You can copy and paste this list directly into your favorite spreadsheet program. Don't you just adore lovely numbers listed nicely in columns & rows? We do!

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Rank County Population
1 Cook County 5,211,263
2 DuPage County 930,128
3 Lake County 703,520
4 Will County 692,661
5 Kane County 534,667
6 McHenry County 309,122
7 Winnebago County 284,778
8 Madison County 265,428
9 St. Clair County 262,479
10 Champaign County 209,399
11 Sangamon County 196,452
12 Peoria County 183,011
13 McLean County 172,290
14 Rock Island County 144,808
15 Tazewell County 133,526
16 Kendall County 126,218
17 LaSalle County 110,067
18 Kankakee County 109,605
19 Macon County 105,801
20 DeKalb County 104,733
21 Vermilion County 77,909
22 Williamson County 67,328
23 Adams County 66,234
24 Jackson County 58,284
25 Whiteside County 56,118
26 Boone County 53,513
27 Coles County 51,979
28 Ogle County 51,063
29 Knox County 50,638
30 Grundy County 50,586
31 Henry County 49,328
32 Macoupin County 45,446
33 Stephenson County 45,054
34 Franklin County 39,041
35 Woodford County 38,726
36 Jefferson County 38,179
37 Marion County 37,902
38 Clinton County 37,614
39 Livingston County 36,518
40 Fulton County 35,110
41 Lee County 34,406
42 Effingham County 34,132
43 Monroe County 34,097
44 Morgan County 33,798
45 Bureau County 33,243
46 Christian County 33,102
47 Randolph County 32,423
48 McDonough County 30,823
49 Logan County 29,245
50 Montgomery County 28,790
51 Iroquois County 27,876
52 Saline County 24,102
53 Jersey County 21,941
54 Fayette County 21,784
55 Shelby County 21,719
56 Jo Daviess County 21,594
57 Perry County 21,285
58 Douglas County 19,748
59 Crawford County 18,961
60 Hancock County 18,020
61 Edgar County 17,328
62 Warren County 17,167
63 Union County 17,000
64 Bond County 16,948
65 Wayne County 16,495
66 Piatt County 16,445
67 Lawrence County 16,168
68 De Witt County 15,942
69 Richland County 15,901
70 Pike County 15,821
71 Clark County 15,767
72 Mercer County 15,618
73 Moultrie County 14,688
74 Carroll County 14,518
75 Massac County 14,344
76 Washington County 14,030
77 White County 13,938
78 Mason County 13,715
79 Ford County 13,280
80 Clay County 13,269
81 Greene County 13,174
82 Johnson County 12,900
83 Cass County 12,505
84 Menard County 12,245
85 Marshall County 11,730
86 Wabash County 11,489
87 Cumberland County 10,908
88 Jasper County 9,578
89 Hamilton County 8,194
90 Schuyler County 7,035
91 Henderson County 6,795
92 Brown County 6,716
93 Edwards County 6,486
94 Alexander County 6,315
95 Putnam County 5,727
96 Pulaski County 5,509
97 Stark County 5,434
98 Gallatin County 5,080
99 Scott County 5,002
100 Calhoun County 4,833
101 Pope County 4,325
102 Hardin County 4,046

United States Census Bureau / American FactFinder. "Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2017". 2017 Population Estimates Program. Web. March 2018. http://factfinder2.census.gov.

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