Demographics Table
Demographic Data Report for Illinois by County
Population: Age 18-39
All Races (includes Hispanic), Both Sexes
2020-2024 American Community Survey 5-Year Data
Sorted by Percent
County
|
2023 Rural-Urban Continuum Codes Φ
|
Value (Percent)
|
People (Age 18-39)
|
Rank within US (of 3143 counties)
|
|---|---|---|---|---|
| United States | N/A | 29.5 | 98,945,767 | N/A |
| Illinois | N/A | 29.5 | 3,740,785 | 18 of 52 |
| Cook County | Urban | 31.8 | 1,648,742 | 304 |
| DuPage County | Urban | 27.6 | 256,716 | 961 |
| Lake County | Urban | 27.9 | 199,249 | 884 |
| Will County | Urban | 27.6 | 193,823 | 961 |
| Kane County | Urban | 27.6 | 142,794 | 961 |
| Champaign County | Urban | 42.2 | 88,080 | 38 |
| McHenry County | Urban | 26.4 | 82,550 | 1,335 |
| Winnebago County | Urban | 27.0 | 76,501 | 1,142 |
| Madison County | Urban | 28.4 | 75,095 | 782 |
| St. Clair County | Urban | 27.1 | 68,842 | 1,112 |
| McLean County | Urban | 35.9 | 61,631 | 125 |
| Sangamon County | Urban | 26.6 | 51,846 | 1,264 |
| Peoria County | Urban | 28.4 | 51,055 | 782 |
| Kendall County | Urban | 28.4 | 39,053 | 782 |
| Rock Island County | Urban | 27.2 | 38,797 | 1,081 |
| DeKalb County | Urban | 37.8 | 38,032 | 84 |
| Tazewell County | Urban | 25.5 | 33,190 | 1,660 |
| Kankakee County | Urban | 28.2 | 30,039 | 824 |
| La Salle County | Rural | 26.1 | 28,397 | 1,451 |
| Macon County | Urban | 26.6 | 27,142 | 1,264 |
| Jackson County | Rural | 39.9 | 21,180 | 59 |
| Vermilion County | Rural | 24.7 | 17,907 | 1,977 |
| Williamson County | Rural | 26.6 | 17,777 | 1,264 |
| Adams County | Rural | 25.4 | 16,447 | 1,712 |
| Coles County | Rural | 34.3 | 16,028 | 186 |
| Grundy County | Urban | 28.4 | 15,097 | 782 |
| Boone County | Urban | 26.5 | 14,119 | 1,298 |
| Whiteside County | Rural | 24.9 | 13,688 | 1,908 |
| Ogle County | Rural | 25.2 | 12,975 | 1,789 |
| Knox County | Rural | 26.4 | 12,927 | 1,335 |
| Henry County | Urban | 23.9 | 11,628 | 2,221 |
| Macoupin County | Urban | 24.1 | 10,687 | 2,168 |
| Stephenson County | Rural | 23.0 | 10,075 | 2,479 |
| McDonough County | Rural | 37.3 | 10,030 | 95 |
| Clinton County | Urban | 26.5 | 9,783 | 1,298 |
| Woodford County | Urban | 25.5 | 9,775 | 1,660 |
| Morgan County | Rural | 29.3 | 9,664 | 594 |
| Jefferson County | Rural | 26.3 | 9,627 | 1,375 |
| Livingston County | Rural | 25.6 | 9,096 | 1,623 |
| Marion County | Rural | 24.5 | 9,064 | 2,046 |
| Effingham County | Rural | 26.1 | 9,012 | 1,451 |
| Christian County | Rural | 26.9 | 9,007 | 1,171 |
| Franklin County | Rural | 24.1 | 8,983 | 2,168 |
| Lee County | Rural | 26.3 | 8,917 | 1,375 |
| Monroe County | Urban | 24.1 | 8,442 | 2,168 |
| Fulton County | Rural | 25.5 | 8,405 | 1,660 |
| Logan County | Rural | 29.2 | 8,102 | 615 |
| Bureau County | Rural | 24.4 | 8,020 | 2,081 |
| Randolph County | Rural | 24.8 | 7,466 | 1,934 |
| Montgomery County | Rural | 26.2 | 7,322 | 1,415 |
| Iroquois County | Rural | 23.0 | 6,094 | 2,479 |
| Saline County | Rural | 26.0 | 6,043 | 1,485 |
| Fayette County | Rural | 27.3 | 5,817 | 1,051 |
| Perry County | Rural | 27.9 | 5,755 | 884 |
| Jersey County | Urban | 26.5 | 5,637 | 1,298 |
| Bond County | Urban | 32.8 | 5,479 | 248 |
| Douglas County | Rural | 27.6 | 5,456 | 961 |
| Shelby County | Rural | 23.4 | 4,855 | 2,371 |
| Crawford County | Rural | 26.0 | 4,818 | 1,485 |
| Warren County | Rural | 28.8 | 4,732 | 703 |
| Jo Daviess County | Rural | 20.8 | 4,535 | 2,889 |
| Lawrence County | Rural | 29.7 | 4,463 | 525 |
| Piatt County | Urban | 25.2 | 4,201 | 1,789 |
| Union County | Rural | 23.5 | 4,001 | 2,338 |
| Carroll County | Rural | 25.0 | 3,894 | 1,871 |
| Hancock County | Rural | 22.3 | 3,862 | 2,652 |
| Johnson County | Rural | 28.8 | 3,854 | 703 |
| Clark County | Rural | 24.8 | 3,784 | 1,934 |
| Wayne County | Rural | 23.2 | 3,702 | 2,438 |
| Richland County | Rural | 23.7 | 3,692 | 2,289 |
| Mercer County | Urban | 23.2 | 3,599 | 2,438 |
| Edgar County | Rural | 21.7 | 3,588 | 2,756 |
| De Witt County | Rural | 23.3 | 3,586 | 2,400 |
| Moultrie County | Rural | 24.7 | 3,558 | 1,977 |
| Cass County | Rural | 27.7 | 3,544 | 935 |
| Pike County | Rural | 24.0 | 3,471 | 2,197 |
| Washington County | Rural | 25.0 | 3,408 | 1,871 |
| Ford County | Urban | 25.0 | 3,358 | 1,871 |
| Clay County | Rural | 25.6 | 3,347 | 1,623 |
| White County | Rural | 23.3 | 3,167 | 2,400 |
| Massac County | Urban | 22.5 | 3,115 | 2,613 |
| Mason County | Rural | 23.9 | 3,049 | 2,221 |
| Menard County | Urban | 24.3 | 2,941 | 2,109 |
| Wabash County | Rural | 25.0 | 2,785 | 1,871 |
| Greene County | Rural | 23.5 | 2,749 | 2,338 |
| Marshall County | Urban | 22.8 | 2,659 | 2,538 |
| Cumberland County | Rural | 23.9 | 2,467 | 2,221 |
| Jasper County | Rural | 22.0 | 2,020 | 2,710 |
| Brown County | Rural | 31.4 | 1,987 | 337 |
| Hamilton County | Rural | 23.1 | 1,831 | 2,459 |
| Schuyler County | Rural | 20.5 | 1,393 | 2,913 |
| Edwards County | Rural | 21.2 | 1,290 | 2,825 |
| Henderson County | Rural | 20.8 | 1,286 | 2,889 |
| Putnam County | Rural | 22.9 | 1,285 | 2,508 |
| Pulaski County | Rural | 25.2 | 1,264 | 1,789 |
| Stark County | Urban | 23.6 | 1,255 | 2,311 |
| Gallatin County | Rural | 22.5 | 1,084 | 2,613 |
| Scott County | Rural | 21.5 | 1,061 | 2,787 |
| Alexander County | Urban | 18.7 | 912 | 3,034 |
| Hardin County | Rural | 22.7 | 819 | 2,567 |
| Calhoun County | Urban | 18.6 | 805 | 3,039 |
| Pope County | Rural | 16.2 | 604 | 3,114 |
Notes:
Created by statecancerprofiles.cancer.gov on 03/30/2026 12:41 pm.
Φ Rural–urban county classifications are based on the 2023 USDA Rural–Urban Continuum Codes (except for Connecticut Counties which use 2013 codes). State-level cancer rates for rural areas are calculated using cancer cases registered exclusively in rural counties, while state-level cancer rates for urban areas are calculated using cases registered exclusively in urban counties.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age 18-39, see the dictionary.
Data for United States does not include Puerto Rico.