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Demographics Table

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Demographic Data Report for Illinois by County
Population: Age under 18
All Races (includes Hispanic), Both Sexes
2017-2021 American Community Survey 5-Year Data
Sorted by Count
County
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Value (Percent)
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People (Age Under 18)
 sort by sample size ascending
Rank within US
(of 3143 counties)
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United States 22.5 74,234,075 N/A
Illinois 22.5 2,887,351 24 of 52
Cook County 21.9 1,151,647 1,739
DuPage County 22.8 212,701 1,352
Lake County 24.1 172,427 765
Will County 24.8 172,426 577
Kane County 25.3 131,408 461
McHenry County 23.5 72,908 1,041
Winnebago County 23.6 67,408 976
St. Clair County 23.7 61,160 969
Madison County 22.0 58,478 1,694
Sangamon County 22.3 43,924 1,539
Peoria County 24.0 43,771 815
Champaign County 19.1 39,485 2,634
Kendall County 28.4 37,154 140
McLean County 21.6 37,013 1,876
Rock Island County 22.5 32,557 1,464
Tazewell County 22.8 30,097 1,335
Kankakee County 22.9 24,768 1,287
La Salle County 21.6 23,708 1,900
Macon County 22.5 23,483 1,461
DeKalb County 21.7 21,885 1,828
Vermilion County 23.7 17,766 952
Adams County 22.8 14,996 1,355
Williamson County 22.0 14,773 1,701
Grundy County 25.3 13,223 475
Boone County 24.6 13,206 613
Whiteside County 22.2 12,398 1,612
Ogle County 22.6 11,723 1,422
Henry County 22.4 11,051 1,515
Jackson County 18.9 10,124 2,681
Knox County 20.0 10,042 2,404
Stephenson County 21.6 9,681 1,872
Macoupin County 21.2 9,574 2,016
Woodford County 24.3 9,374 710
Marion County 23.5 8,892 1,011
Coles County 18.2 8,646 2,804
Franklin County 22.4 8,514 1,514
Jefferson County 22.4 8,387 1,479
Effingham County 24.1 8,324 791
Clinton County 21.4 7,935 1,945
Livingston County 21.9 7,865 1,723
Monroe County 22.4 7,771 1,511
Christian County 21.2 7,221 2,013
Bureau County 21.4 7,144 1,940
Lee County 19.9 6,851 2,430
Fulton County 19.8 6,736 2,462
Morgan County 19.2 6,367 2,616
Iroquois County 22.0 6,019 1,680
Randolph County 19.4 5,955 2,544
Montgomery County 20.3 5,787 2,308
Logan County 19.4 5,465 2,566
Saline County 21.6 5,159 1,867
Douglas County 25.0 4,919 526
McDonough County 17.3 4,809 2,913
Shelby County 21.7 4,590 1,825
Fayette County 21.2 4,570 2,008
Jersey County 20.4 4,390 2,291
Jo Daviess County 19.0 4,184 2,650
Perry County 19.4 4,107 2,553
Moultrie County 25.7 3,762 386
Richland County 23.6 3,742 1,001
Piatt County 22.4 3,738 1,489
Hancock County 20.9 3,716 2,105
Crawford County 19.7 3,709 2,479
Wayne County 22.8 3,703 1,342
Warren County 21.8 3,680 1,785
Union County 21.3 3,668 2,004
Clark County 23.2 3,620 1,155
Pike County 22.8 3,402 1,339
Mercer County 21.4 3,381 1,942
Edgar County 19.9 3,377 2,447
De Witt County 21.5 3,365 1,916
Cass County 24.6 3,211 629
Massac County 22.0 3,147 1,665
Bond County 18.7 3,136 2,724
Ford County 23.0 3,131 1,232
White County 22.1 3,081 1,650
Clay County 23.0 3,064 1,243
Carroll County 19.5 3,045 2,523
Lawrence County 19.0 2,945 2,646
Washington County 21.2 2,926 2,035
Menard County 22.9 2,825 1,300
Mason County 20.8 2,756 2,142
Greene County 21.6 2,635 1,864
Wabash County 22.3 2,551 1,524
Johnson County 19.2 2,548 2,597
Marshall County 20.7 2,435 2,190
Cumberland County 22.8 2,404 1,326
Jasper County 23.1 2,150 1,224
Hamilton County 21.9 1,753 1,746
Edwards County 22.7 1,416 1,383
Alexander County 22.7 1,246 1,387
Schuyler County 17.4 1,210 2,902
Henderson County 18.4 1,196 2,759
Stark County 21.3 1,158 1,982
Putnam County 20.5 1,153 2,267
Pulaski County 21.1 1,114 2,059
Brown County 17.4 1,103 2,900
Scott County 21.9 1,077 1,734
Gallatin County 19.9 1,005 2,425
Calhoun County 20.2 917 2,337
Pope County 18.1 693 2,813
Hardin County 13.8 511 3,109
Notes:
Created by statecancerprofiles.cancer.gov on 04/20/2024 4:21 pm.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age under 18, see the dictionary.
Data for United States does not include Puerto Rico.

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