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    Jan 1990    
 
 
    Oct 2020
Persons
Name Oct 2020 Sep 2020 Oct 2019
Adams County
32,943 32,110 32,234
Alexander County
1,997 1,964 2,057
Bond County
8,024 7,707 7,918
Boone County
25,605 25,382 26,184
Brown County
3,108 2,930 3,049
Bureau County
17,822 17,304 17,436
Calhoun County
2,358 2,264 2,352
Carroll County
7,849 7,462 7,469
Cass County
6,348 6,105 6,144
Champaign County
116,205 111,704 112,731
Christian County
14,486 14,146 14,417
Clark County
7,814 7,448 7,731
Clinton County
20,861 20,065 20,797
Coles County
24,946 24,481 24,353
Cook County
2,470,460 2,574,416 2,584,954
Cumberland County
6,327 6,057 6,203
Crawford County
8,767 8,498 8,770
Clay County
6,416 6,160 6,563
DeKalb County
54,686 53,758 55,729
De Witt County
7,593 7,264 7,579
Douglas County
10,634 10,238 10,401
DuPage County
472,818 484,037 506,480
Edgar County
9,004 8,544 9,031
Effingham County
19,675 19,218 19,369
Edwards County
2,764 2,640 2,695
Fayette County
10,284 9,956 9,963
Ford County
6,973 6,507 6,740
Franklin County
16,525 16,357 16,487
Fulton County
15,220 14,870 15,293
Gallatin County
2,312 2,227 2,349
Greene County
6,352 6,053 6,112
Grundy County
23,346 23,849 25,186
Hamilton County
4,539 4,310 4,511
Hancock County
8,844 8,339 8,613
Henderson County
3,767 3,590 3,628
Henry County
25,295 24,465 25,391
Hardin County
1,367 1,351 1,331
Iroquois County
15,212 14,335 14,694
Jackson County
29,084 28,291 28,426
Jefferson County
17,743 17,388 17,555
Johnson County
4,230 4,140 4,176
Jo Daviess County
10,966 10,655 10,964
Jersey County
11,126 10,845 11,081
Jasper County
5,114 4,796 4,704
Kane County
269,716 267,354 274,663
Kankakee County
57,410 56,482 56,899
Kendall County
63,674 65,207 68,344
Knox County
21,860 21,736 21,796
Lake County
375,519 370,891 377,502
La Salle County
54,898 54,219 54,794
Lee County
18,050 17,497 17,909
Livingston County
17,235 16,578 16,923
Logan County
12,856 12,553 12,724
Lawrence County
5,798 5,683 5,822
Macon County
48,511 48,339 48,737
Marshall County
5,230 5,010 5,392
Mason County
6,481 6,275 6,423
McDonough County
14,050 13,685 13,857
McHenry County
153,736 156,713 164,879
McLean County
89,091 86,611 89,514
Madison County
136,721 134,516 135,607
Menard County
6,543 6,337 6,545
Mercer County
8,223 7,895 8,215
Montgomery County
11,627 11,403 11,769
Morgan County
16,988 16,572 16,662
Macoupin County
23,371 22,607 23,272
Moultrie County
7,924 7,591 7,685
Marion County
17,562 17,194 17,668
Massac County
5,602 5,514 5,638
Monroe County
19,029 18,506 19,052
Ogle County
24,952 24,376 25,027
Peoria County
82,953 82,557 85,250
Piatt County
9,210 8,672 8,941
Pike County
7,381 7,025 7,076
Pope County
1,747 1,665 1,697
Perry County
8,562 8,298 8,487
Pulaski County
2,049 1,980 2,080
Putnam County
3,188 3,128 3,061
Randolph County
14,527 14,057 14,596
Richland County
7,296 7,106 7,289
Rock Island County
72,011 71,050 72,288
Saline County
9,898 9,709 9,776
Sangamon County
102,083 100,901 101,397
Schuyler County
3,341 3,223 3,313
Shelby County
11,045 10,552 10,799
Scott County
2,681 2,545 2,549
Stark County
2,495 2,359 2,565
Stephenson County
22,647 21,968 21,906
St. Clair County
129,735 128,825 127,893
Tazewell County
61,681 60,502 64,133
Union County
7,703 7,457 7,584
Vermilion County
34,367 33,413 33,480
Wabash County
6,094 5,897 5,966
Warren County
8,777 8,410 8,575
Whiteside County
28,711 28,033 28,946
White County
6,738 6,505 6,717
Will County
333,118 343,247 355,213
Winnebago County
137,342 137,912 139,810
Williamson County
32,986 32,199 32,384
Woodford County
18,171 17,583 18,889
Washington County
9,451 9,053 10,280
Wayne County
7,422 7,067 7,229
   

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