Demographics Table
Demographic Data Report for Illinois by County
Education: Less than High School
Population Ages 25+
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(Education: Less Than High School)
|
Rank within US (of 3143 counties)
|
|---|---|---|---|---|
| United States | N/A | 10.4 | 23,992,410 | N/A |
| Illinois | N/A | 9.5 | 835,754 | 31 of 52 |
| Brown County | Rural | 23.3 | 1,118 | 3,053 |
| Johnson County | Rural | 14.6 | 1,389 | 2,469 |
| Moultrie County | Rural | 14.4 | 1,401 | 2,437 |
| Perry County | Rural | 14.1 | 2,102 | 2,392 |
| Boone County | Urban | 13.8 | 4,924 | 2,349 |
| Cass County | Rural | 13.6 | 1,179 | 2,318 |
| Gallatin County | Rural | 13.2 | 468 | 2,244 |
| Lawrence County | Rural | 13.0 | 1,426 | 2,213 |
| Randolph County | Rural | 12.9 | 2,829 | 2,192 |
| Warren County | Rural | 12.9 | 1,387 | 2,192 |
| Fayette County | Rural | 12.7 | 1,916 | 2,153 |
| Alexander County | Urban | 12.6 | 439 | 2,133 |
| Kane County | Urban | 12.6 | 43,584 | 2,133 |
| Douglas County | Rural | 12.5 | 1,666 | 2,121 |
| Union County | Rural | 12.5 | 1,530 | 2,121 |
| Pulaski County | Rural | 12.4 | 426 | 2,100 |
| Cook County | Urban | 11.4 | 416,621 | 1,913 |
| Livingston County | Rural | 11.4 | 2,872 | 1,913 |
| Winnebago County | Urban | 11.2 | 21,559 | 1,876 |
| Carroll County | Rural | 11.1 | 1,286 | 1,859 |
| White County | Rural | 11.1 | 1,085 | 1,859 |
| Iroquois County | Rural | 10.9 | 2,037 | 1,824 |
| Edgar County | Rural | 10.8 | 1,320 | 1,800 |
| Morgan County | Rural | 10.5 | 2,414 | 1,736 |
| Franklin County | Rural | 10.4 | 2,748 | 1,712 |
| Wayne County | Rural | 10.4 | 1,164 | 1,712 |
| Saline County | Rural | 10.3 | 1,741 | 1,685 |
| Knox County | Rural | 10.1 | 3,448 | 1,637 |
| Bond County | Urban | 9.9 | 1,132 | 1,602 |
| Montgomery County | Rural | 9.8 | 2,002 | 1,573 |
| Clay County | Rural | 9.5 | 853 | 1,501 |
| Crawford County | Rural | 9.5 | 1,266 | 1,501 |
| Fulton County | Rural | 9.4 | 2,265 | 1,469 |
| Lake County | Urban | 9.4 | 44,725 | 1,469 |
| Marion County | Rural | 9.3 | 2,382 | 1,440 |
| Massac County | Urban | 9.3 | 932 | 1,440 |
| Rock Island County | Urban | 9.3 | 9,142 | 1,440 |
| Christian County | Rural | 9.1 | 2,233 | 1,369 |
| Henderson County | Rural | 9.1 | 426 | 1,369 |
| Vermilion County | Rural | 9.0 | 4,508 | 1,345 |
| Coles County | Rural | 8.9 | 2,697 | 1,319 |
| Ogle County | Rural | 8.9 | 3,205 | 1,319 |
| Greene County | Rural | 8.8 | 729 | 1,292 |
| Lee County | Rural | 8.8 | 2,207 | 1,292 |
| Macoupin County | Urban | 8.6 | 2,747 | 1,233 |
| Pike County | Rural | 8.6 | 877 | 1,233 |
| Bureau County | Rural | 8.5 | 2,010 | 1,198 |
| Marshall County | Urban | 8.5 | 722 | 1,198 |
| Richland County | Rural | 8.5 | 931 | 1,198 |
| Ford County | Urban | 8.4 | 781 | 1,181 |
| Kankakee County | Urban | 8.4 | 6,054 | 1,181 |
| Hamilton County | Rural | 8.3 | 469 | 1,147 |
| Jasper County | Rural | 8.2 | 529 | 1,124 |
| La Salle County | Rural | 8.2 | 6,302 | 1,124 |
| Will County | Urban | 8.2 | 38,704 | 1,124 |
| Edwards County | Rural | 8.1 | 347 | 1,093 |
| Hardin County | Rural | 8.1 | 234 | 1,093 |
| Whiteside County | Rural | 8.1 | 3,137 | 1,093 |
| Clinton County | Urban | 7.8 | 2,049 | 1,011 |
| DeKalb County | Urban | 7.8 | 4,712 | 1,011 |
| Jefferson County | Rural | 7.7 | 1,973 | 983 |
| Henry County | Urban | 7.6 | 2,659 | 951 |
| Scott County | Rural | 7.6 | 270 | 951 |
| Clark County | Rural | 7.5 | 807 | 915 |
| Pope County | Rural | 7.4 | 217 | 877 |
| Stephenson County | Rural | 7.4 | 2,299 | 877 |
| Logan County | Rural | 7.3 | 1,446 | 843 |
| Schuyler County | Rural | 7.3 | 385 | 843 |
| Stark County | Urban | 7.2 | 274 | 822 |
| Wabash County | Rural | 7.2 | 560 | 822 |
| Williamson County | Rural | 7.2 | 3,489 | 822 |
| Jackson County | Rural | 7.1 | 2,257 | 793 |
| Washington County | Rural | 7.1 | 695 | 793 |
| DuPage County | Urban | 7.0 | 45,564 | 766 |
| Effingham County | Rural | 7.0 | 1,664 | 766 |
| Mason County | Rural | 7.0 | 648 | 766 |
| Macon County | Urban | 6.9 | 4,878 | 734 |
| Jo Daviess County | Rural | 6.8 | 1,134 | 704 |
| Peoria County | Urban | 6.6 | 7,960 | 658 |
| St. Clair County | Urban | 6.5 | 11,418 | 630 |
| Hancock County | Rural | 6.4 | 800 | 607 |
| McHenry County | Urban | 6.3 | 13,691 | 572 |
| Adams County | Rural | 6.2 | 2,780 | 547 |
| Grundy County | Urban | 6.2 | 2,209 | 547 |
| De Witt County | Rural | 6.1 | 665 | 514 |
| Madison County | Urban | 6.1 | 11,340 | 514 |
| Mercer County | Urban | 6.1 | 682 | 514 |
| Kendall County | Urban | 6.0 | 5,336 | 490 |
| Cumberland County | Rural | 5.9 | 428 | 464 |
| Jersey County | Urban | 5.9 | 877 | 464 |
| Sangamon County | Urban | 5.9 | 8,017 | 464 |
| McDonough County | Rural | 5.8 | 962 | 432 |
| Putnam County | Rural | 5.8 | 241 | 432 |
| Calhoun County | Urban | 5.7 | 176 | 423 |
| Tazewell County | Urban | 5.7 | 5,254 | 423 |
| Woodford County | Urban | 5.2 | 1,358 | 297 |
| Shelby County | Rural | 5.1 | 762 | 279 |
| Menard County | Urban | 5.0 | 433 | 261 |
| Champaign County | Urban | 4.9 | 5,937 | 235 |
| McLean County | Urban | 4.1 | 4,367 | 113 |
| Monroe County | Urban | 4.0 | 1,004 | 103 |
| Piatt County | Urban | 3.8 | 450 | 90 |
Notes:
Created by statecancerprofiles.cancer.gov on 03/25/2026 7:07 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 Education: Less than High School, see the dictionary.
Data for United States does not include Puerto Rico.