Illinois Citizen Voting-age Population By County in 2022 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2022, the citizen voting-age population for Illinois was 9,143,765 and represented 71.67% of the total Illinois population.
Among all Illinois counties, Cook had the highest citizen voting-age population (3.62M), followed by DuPage (654.55K), and Will (493.65K).
In terms of percentages, Hardin had the highest percentage of its population being citizens of voting-age (85.95%), followed by Pope (83.03%), and Brown (81.85%).
The chart and table below shows the citizen voting-age population of each county and the percentage of each county's population that were citizens of voting-age.
You can see similar information for other states and by state for the United States.
| County | Citizen Voting-age Population | % of County Population |
|---|---|---|
| Cook | 3616985 | 69.22 |
| DuPage | 654550 | 70.34 |
| Will | 493645 | 70.85 |
| Lake | 485975 | 68.14 |
| Kane | 347745 | 67.23 |
| McHenry | 227430 | 73.10 |
| Madison | 206570 | 77.80 |
| Winnebago | 205975 | 72.38 |
| St. Clair | 194075 | 75.58 |
| Champaign | 151205 | 73.21 |
| Sangamon | 150650 | 76.82 |
| Peoria | 133445 | 73.65 |
| McLean | 128840 | 75.22 |
| Rock Island | 106130 | 73.79 |
| Tazewell | 100930 | 76.88 |
| Kendall | 90010 | 67.78 |
| LaSalle | 84315 | 77.00 |
| Kankakee | 80535 | 74.97 |
| Macon | 79015 | 76.31 |
| DeKalb | 75495 | 74.98 |
| Vermilion | 56270 | 75.92 |
| Williamson | 51835 | 77.23 |
| Adams | 50570 | 77.11 |
| Whiteside | 42620 | 76.70 |
| Jackson | 41590 | 78.21 |
| Ogle | 39180 | 75.83 |
| Grundy | 38935 | 73.99 |
| Knox | 38655 | 77.70 |
| Coles | 38235 | 81.22 |
| Henry | 38095 | 77.50 |
| Boone | 37745 | 70.60 |
| Macoupin | 35385 | 78.80 |
| Stephenson | 34545 | 77.66 |
| Franklin | 29330 | 77.57 |
| Woodford | 29005 | 75.50 |
| Clinton | 28700 | 77.57 |
| Jefferson | 28575 | 77.14 |
| Marion | 28505 | 75.92 |
| Livingston | 27710 | 77.47 |
| Monroe | 27135 | 77.74 |
| Lee | 27010 | 78.93 |
| Fulton | 26810 | 79.58 |
| Christian | 26625 | 78.55 |
| Morgan | 26475 | 80.52 |
| Effingham | 25955 | 75.03 |
| Bureau | 25740 | 77.52 |
| Randolph | 23900 | 78.58 |
| Montgomery | 22565 | 79.59 |
| Logan | 22410 | 79.96 |
| McDonough | 22310 | 81.51 |
| Iroquois | 20685 | 76.48 |
| Saline | 18655 | 78.85 |
| Jo Daviess | 17790 | 81.08 |
| Jersey | 17115 | 79.75 |
| Fayette | 16970 | 79.06 |
| Perry | 16780 | 79.92 |
| Shelby | 16415 | 78.02 |
| Crawford | 14890 | 79.50 |
| Douglas | 14580 | 73.95 |
| Hancock | 13800 | 78.50 |
| Bond | 13550 | 80.90 |
| Edgar | 13505 | 80.15 |
| Union | 13425 | 78.42 |
| Piatt | 13000 | 77.84 |
| Carroll | 12660 | 81.18 |
| Warren | 12575 | 75.03 |
| Mercer | 12400 | 79.03 |
| Wayne | 12305 | 76.31 |
| Lawrence | 12240 | 80.00 |
| De Witt | 12110 | 77.95 |
| Richland | 11980 | 76.23 |
| Clark | 11870 | 76.75 |
| Pike | 11365 | 76.92 |
| Massac | 10980 | 77.68 |
| Washington | 10835 | 78.63 |
| White | 10810 | 78.14 |
| Moultrie | 10800 | 74.33 |
| Johnson | 10505 | 78.90 |
| Mason | 10360 | 79.24 |
| Ford | 10280 | 76.23 |
| Clay | 10205 | 77.02 |
| Menard | 9475 | 77.13 |
| Greene | 9405 | 78.28 |
| Marshall | 9225 | 78.58 |
| Cass | 8850 | 68.31 |
| Wabash | 8745 | 77.25 |
| Cumberland | 8005 | 76.64 |
| Jasper | 7150 | 76.92 |
| Hamilton | 6240 | 77.90 |
| Schuyler | 5605 | 81.47 |
| Brown | 5185 | 81.85 |
| Henderson | 5165 | 81.02 |
| Edwards | 4740 | 76.70 |
| Putnam | 4500 | 79.93 |
| Stark | 4200 | 77.85 |
| Alexander | 4105 | 78.04 |
| Pulaski | 4105 | 79.32 |
| Gallatin | 4005 | 80.67 |
| Scott | 3835 | 78.27 |
| Calhoun | 3565 | 79.75 |
| Pope | 3155 | 83.03 |
| Hardin | 3150 | 85.95 |
