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    Jan 1990    
 
 
    Mar 2020
Persons
Name Mar 2020 Feb 2020 Mar 2019
Adams County
29,917 31,415 32,630
Alexander County
1,928 2,030 2,053
Bond County
7,189 7,568 7,759
Boone County
23,971 25,411 26,580
Brown County
2,814 2,929 2,950
Bureau County
15,891 16,496 17,300
Calhoun County
2,154 2,260 2,320
Carroll County
6,759 7,020 7,076
Cass County
5,622 5,917 6,127
Champaign County
104,445 110,763 110,426
Christian County
13,269 13,879 14,758
Clark County
7,125 7,370 7,690
Clinton County
19,036 20,085 20,399
Coles County
22,578 23,876 24,477
Cook County
2,620,353 2,564,954 2,602,041
Cumberland County
5,750 6,029 6,145
Crawford County
8,075 8,432 9,004
Clay County
5,887 6,206 6,413
DeKalb County
51,433 54,265 55,133
De Witt County
6,911 7,225 7,517
Douglas County
9,571 10,041 10,232
DuPage County
510,885 502,242 508,860
Edgar County
7,946 8,399 9,066
Effingham County
18,174 19,083 19,408
Edwards County
2,517 2,639 2,708
Fayette County
9,133 9,550 9,896
Ford County
6,062 6,359 6,520
Franklin County
15,323 16,079 16,584
Fulton County
14,096 14,759 15,281
Gallatin County
2,185 2,291 2,379
Greene County
5,609 5,796 6,000
Grundy County
25,718 25,176 25,622
Hamilton County
4,113 4,305 4,459
Hancock County
7,687 7,955 8,367
Henderson County
3,368 3,427 3,584
Henry County
23,199 24,186 25,082
Hardin County
1,226 1,286 1,320
Iroquois County
13,271 13,680 14,248
Jackson County
26,365 27,776 28,498
Jefferson County
16,248 17,171 17,643
Johnson County
4,012 4,220 4,268
Jo Daviess County
9,783 10,243 10,667
Jersey County
10,263 10,838 11,014
Jasper County
4,507 4,614 4,572
Kane County
255,766 270,431 274,791
Kankakee County
52,865 55,329 55,974
Kendall County
68,987 67,885 68,680
Knox County
19,891 20,838 21,806
Lake County
349,714 368,187 378,320
La Salle County
50,917 53,486 55,336
Lee County
16,398 17,296 17,522
Livingston County
15,148 15,858 16,515
Logan County
11,708 12,279 12,852
Lawrence County
5,489 5,772 5,956
Macon County
44,959 47,129 48,648
Marshall County
4,886 5,107 5,371
Mason County
5,830 6,075 6,246
McDonough County
12,399 13,084 13,678
McHenry County
167,228 164,000 166,384
McLean County
82,458 86,658 88,619
Madison County
125,785 132,902 134,444
Menard County
6,061 6,344 6,568
Mercer County
7,513 7,844 8,158
Montgomery County
10,891 11,358 11,875
Morgan County
15,302 15,991 16,517
Macoupin County
21,424 22,534 23,024
Moultrie County
7,088 7,422 7,607
Marion County
16,215 17,054 17,754
Massac County
5,307 5,579 5,620
Monroe County
17,594 18,605 18,785
Ogle County
22,868 23,940 25,242
Peoria County
78,226 82,684 85,573
Piatt County
8,160 8,616 8,702
Pike County
6,405 6,594 6,992
Pope County
1,591 1,653 1,713
Perry County
7,778 8,194 8,450
Pulaski County
1,825 1,911 1,968
Putnam County
2,950 3,070 3,072
Randolph County
13,335 14,039 14,315
Richland County
6,755 7,061 7,283
Rock Island County
66,721 69,781 71,766
Saline County
9,078 9,494 9,773
Sangamon County
94,495 98,883 101,845
Schuyler County
2,956 3,048 3,235
Shelby County
9,809 10,253 10,624
Scott County
2,353 2,442 2,511
Stark County
2,278 2,380 2,551
Stephenson County
20,121 20,950 21,684
St. Clair County
118,569 125,252 126,998
Tazewell County
58,660 61,930 64,189
Union County
7,058 7,400 7,537
Vermilion County
30,618 32,271 33,329
Wabash County
5,620 5,862 5,825
Warren County
7,804 8,127 8,629
Whiteside County
26,394 27,781 28,618
White County
6,136 6,389 6,692
Will County
360,586 353,805 358,180
Winnebago County
127,235 134,619 140,607
Williamson County
30,322 31,949 32,770
Woodford County
17,205 18,104 18,833
Washington County
9,279 9,769 10,128
Wayne County
6,519 6,728 6,965
   

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