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!

Rank County Population
1 Cook County 5,180,493
2 DuPage County 928,589
3 Lake County 700,832
4 Will County 692,310
5 Kane County 534,216
6 McHenry County 308,570
7 Winnebago County 284,081
8 Madison County 264,461
9 St. Clair County 261,059
10 Champaign County 209,983
11 Sangamon County 195,348
12 Peoria County 180,621
13 McLean County 172,828
14 Rock Island County 143,477
15 Tazewell County 132,328
16 Kendall County 127,915
17 Kankakee County 110,024
18 LaSalle County 109,430
19 Macon County 104,712
20 DeKalb County 104,143
21 Vermilion County 76,806
22 Williamson County 67,056
23 Adams County 65,691
24 Jackson County 57,419
25 Whiteside County 55,626
26 Boone County 53,577
27 Grundy County 50,972
28 Ogle County 50,923
29 Coles County 50,885
30 Knox County 50,112
31 Henry County 49,090
32 Macoupin County 45,313
33 Stephenson County 44,753
34 Franklin County 38,701
35 Woodford County 38,463
36 Jefferson County 37,820
37 Clinton County 37,639
38 Marion County 37,620
39 Livingston County 35,761
40 Fulton County 34,844
41 Monroe County 34,335
42 Lee County 34,223
43 Effingham County 34,208
44 Morgan County 33,976
45 Bureau County 32,993
46 Christian County 32,661
47 Randolph County 32,106
48 McDonough County 29,955
49 Logan County 28,925
50 Montgomery County 28,601
51 Iroquois County 27,604
52 Saline County 23,906
53 Jersey County 21,847
54 Shelby County 21,741
55 Fayette County 21,416
56 Jo Daviess County 21,366
57 Perry County 21,174
58 Douglas County 19,479
59 Crawford County 18,807
60 Hancock County 17,844
61 Edgar County 17,360
62 Warren County 17,032
63 Union County 16,841
64 Bond County 16,630
65 Piatt County 16,396
66 Wayne County 16,332
67 De Witt County 15,769
68 Lawrence County 15,765
69 Richland County 15,763
70 Pike County 15,611
71 Mercer County 15,601
72 Clark County 15,596
73 Moultrie County 14,717
74 Carroll County 14,312
75 Massac County 14,080
76 Washington County 13,995
77 White County 13,665
78 Mason County 13,565
79 Ford County 13,264
80 Clay County 13,253
81 Greene County 13,044
82 Johnson County 12,456
83 Menard County 12,288
84 Cass County 12,260
85 Wabash County 11,549
86 Marshall County 11,534
87 Cumberland County 10,808
88 Jasper County 9,611
89 Hamilton County 8,163
90 Schuyler County 6,907
91 Henderson County 6,709
92 Brown County 6,556
93 Edwards County 6,392
94 Alexander County 6,060
95 Putnam County 5,740
96 Pulaski County 5,463
97 Stark County 5,427
98 Gallatin County 5,058
99 Scott County 4,926
100 Calhoun County 4,802
101 Pope County 4,212
102 Hardin County 3,910

United States Census Bureau. B01001 SEX BY AGE, 2017 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 6 December 2018. http://www.census.gov/.

United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2018. U.S. Census Bureau, Population Division. Web. May 2019. http://www.census.gov/.

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