Illinois Population under 18 years, percent by County

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About this application: This application provides summary profiles showing frequently requested data items from various US Census Bureau programs. Profiles are available for the nation, states, and counties.
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Data Item
State
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Persons under 18 years, percent - (Percent)
County Value
Adams 22.5
Alexander 23.1
Bond 19.4
Boone 24.8
Brown 15.9
Bureau 21.5
Calhoun 20.6
Carroll 19.4
Cass 23.8
Champaign 18.8
Christian 20.2
Clark 22.7
Clay 22.9
Clinton 21.1
Coles 18.1
Cook 21.8
Crawford 19.9
Cumberland 22.2
De Witt 21.4
DeKalb 21.4
Douglas 24.9
DuPage 22.7
Edgar 20.4
Edwards 22.4
Effingham 23.7
Fayette 21.1
Ford 22.9
Franklin 22.3
Fulton 19.8
Gallatin 20.8
Greene 21.3
Grundy 25.3
Hamilton 22.0
Hancock 20.9
Hardin 18.2
Henderson 18.1
Henry 22.4
Iroquois 21.6
Jackson 18.2
Jasper 23.0
Jefferson 22.1
Jersey 20.4
Jo Daviess 18.8
Johnson 18.5
Kane 25.5
Kankakee 22.7
Kendall 28.5
Knox 19.6
Lake 24.1
LaSalle 21.5
Lawrence 18.7
Lee 19.7
Livingston 21.5
Logan 19.4
Macon 22.1
Macoupin 21.3
Madison 21.8
Marion 23.2
Marshall 19.9
Mason 20.8
Massac 22.1
McDonough 17.1
McHenry 23.5
McLean 21.5
Menard 22.0
Mercer 21.4
Monroe 22.1
Montgomery 20.1
Morgan 18.9
Moultrie 25.4
Ogle 22.4
Peoria 23.6
Perry 19.4
Piatt 22.5
Pike 22.3
Pope 12.1
Pulaski 21.6
Putnam 20.1
Randolph 19.3
Richland 23.3
Rock Island 22.3
Saline 21.7
Sangamon 22.2
Schuyler 18.2
Scott 21.6
Shelby 21.4
St. Clair 23.4
Stark 21.5
Stephenson 21.4
Tazewell 22.7
Union 21.0
Vermilion 23.6
Wabash 22.6
Warren 21.9
Washington 21.4
Wayne 22.7
White 21.9
Whiteside 21.9
Will 24.9
Williamson 21.8
Winnebago 23.4
Woodford 24.0

Value for Illinois (Percent): 22.4%

Data item: Persons under 18 years, percent

Sources: U.S. Census Bureau, Population Estimates Program (PEP). Updated annually. Population andHousing Unit Estimates

U.S. Census Bureau, American Community Survey (ACS). Updated annually. American Community Survey

About

Population Estimates Program

Age estimates of the population are produced for the United States, states, and counties, as well as for the Commonwealth ofPuerto Rico and its municipios (county-equivalents for Puerto Rico).Because age is a critical element in determining federal funding, it is imperative to have high quality age data.

For more information, go to Age and Sex

American Community Survey

Age estimates of the population are produced for places, zona urbanas and comunidades (place-equivalents for Puerto Rico), and minor civil divisions.

Data on age are used to determine the applicability of other questions for a particular individual and to classify other characteristics in tabulations.Age data are needed to interpret most social and economic characteristics used to plan and analyze programs and policies.

For more information, go to ACS subject definitions "Age"

Data users should be aware of methodology differences that may exist between different data sources.

Methodology for U.S. and Puerto Rico