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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 Value
County
 sort alphabetically by name ascending
Value (Percent)
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People (Age Under 18)
 sort by sample size ascending
Rank within US
(of 3143 counties)
 sort by rank ascending
United States 22.5 74,234,075 N/A
Illinois 22.5 2,887,351 24 of 52
Hardin County 13.8 511 3,109
McDonough County 17.3 4,809 2,913
Schuyler County 17.4 1,210 2,902
Brown County 17.4 1,103 2,900
Pope County 18.1 693 2,813
Coles County 18.2 8,646 2,804
Henderson County 18.4 1,196 2,759
Bond County 18.7 3,136 2,724
Jackson County 18.9 10,124 2,681
Jo Daviess County 19.0 4,184 2,650
Lawrence County 19.0 2,945 2,646
Champaign County 19.1 39,485 2,634
Morgan County 19.2 6,367 2,616
Johnson County 19.2 2,548 2,597
Logan County 19.4 5,465 2,566
Perry County 19.4 4,107 2,553
Randolph County 19.4 5,955 2,544
Carroll County 19.5 3,045 2,523
Crawford County 19.7 3,709 2,479
Fulton County 19.8 6,736 2,462
Edgar County 19.9 3,377 2,447
Lee County 19.9 6,851 2,430
Gallatin County 19.9 1,005 2,425
Knox County 20.0 10,042 2,404
Calhoun County 20.2 917 2,337
Montgomery County 20.3 5,787 2,308
Jersey County 20.4 4,390 2,291
Putnam County 20.5 1,153 2,267
Marshall County 20.7 2,435 2,190
Mason County 20.8 2,756 2,142
Hancock County 20.9 3,716 2,105
Pulaski County 21.1 1,114 2,059
Washington County 21.2 2,926 2,035
Macoupin County 21.2 9,574 2,016
Christian County 21.2 7,221 2,013
Fayette County 21.2 4,570 2,008
Union County 21.3 3,668 2,004
Stark County 21.3 1,158 1,982
Clinton County 21.4 7,935 1,945
Mercer County 21.4 3,381 1,942
Bureau County 21.4 7,144 1,940
De Witt County 21.5 3,365 1,916
La Salle County 21.6 23,708 1,900
McLean County 21.6 37,013 1,876
Stephenson County 21.6 9,681 1,872
Saline County 21.6 5,159 1,867
Greene County 21.6 2,635 1,864
DeKalb County 21.7 21,885 1,828
Shelby County 21.7 4,590 1,825
Warren County 21.8 3,680 1,785
Hamilton County 21.9 1,753 1,746
Cook County 21.9 1,151,647 1,739
Scott County 21.9 1,077 1,734
Livingston County 21.9 7,865 1,723
Williamson County 22.0 14,773 1,701
Madison County 22.0 58,478 1,694
Iroquois County 22.0 6,019 1,680
Massac County 22.0 3,147 1,665
White County 22.1 3,081 1,650
Whiteside County 22.2 12,398 1,612
Sangamon County 22.3 43,924 1,539
Wabash County 22.3 2,551 1,524
Henry County 22.4 11,051 1,515
Franklin County 22.4 8,514 1,514
Monroe County 22.4 7,771 1,511
Piatt County 22.4 3,738 1,489
Jefferson County 22.4 8,387 1,479
Rock Island County 22.5 32,557 1,464
Macon County 22.5 23,483 1,461
Ogle County 22.6 11,723 1,422
Alexander County 22.7 1,246 1,387
Edwards County 22.7 1,416 1,383
Adams County 22.8 14,996 1,355
DuPage County 22.8 212,701 1,352
Wayne County 22.8 3,703 1,342
Pike County 22.8 3,402 1,339
Tazewell County 22.8 30,097 1,335
Cumberland County 22.8 2,404 1,326
Menard County 22.9 2,825 1,300
Kankakee County 22.9 24,768 1,287
Clay County 23.0 3,064 1,243
Ford County 23.0 3,131 1,232
Jasper County 23.1 2,150 1,224
Clark County 23.2 3,620 1,155
McHenry County 23.5 72,908 1,041
Marion County 23.5 8,892 1,011
Richland County 23.6 3,742 1,001
Winnebago County 23.6 67,408 976
St. Clair County 23.7 61,160 969
Vermilion County 23.7 17,766 952
Peoria County 24.0 43,771 815
Effingham County 24.1 8,324 791
Lake County 24.1 172,427 765
Woodford County 24.3 9,374 710
Cass County 24.6 3,211 629
Boone County 24.6 13,206 613
Will County 24.8 172,426 577
Douglas County 25.0 4,919 526
Grundy County 25.3 13,223 475
Kane County 25.3 131,408 461
Moultrie County 25.7 3,762 386
Kendall County 28.4 37,154 140
Notes:
Created by statecancerprofiles.cancer.gov on 03/28/2024 11:52 am.
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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