Illinois Citizen Voting-age Population By County in 2012 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2012, the citizen voting-age population for Illinois was 8,826,635 and represented 68.83% of the total Illinois population.
Among all Illinois counties, Cook had the highest citizen voting-age population (3.42M), followed by DuPage (621.99K), and Lake (447.23K).
In terms of percentages, Lawrence had the highest percentage of its population being citizens of voting-age (90.91%), followed by McDonough (82.13%), and Brown (81.71%).
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 | 3415415 | 65.71 |
| DuPage | 621990 | 67.71 |
| Lake | 447225 | 63.77 |
| Will | 445760 | 65.78 |
| Kane | 310585 | 60.32 |
| McHenry | 210830 | 68.42 |
| Winnebago | 209920 | 71.30 |
| Madison | 205000 | 76.33 |
| St. Clair | 197920 | 73.61 |
| Sangamon | 148080 | 74.99 |
| Champaign | 147135 | 73.23 |
| Peoria | 137000 | 73.50 |
| McLean | 125525 | 73.97 |
| Rock Island | 108150 | 73.32 |
| Tazewell | 102830 | 76.06 |
| LaSalle | 85430 | 75.14 |
| Macon | 84290 | 76.24 |
| Kankakee | 81675 | 72.17 |
| DeKalb | 77255 | 73.70 |
| Kendall | 74615 | 65.32 |
| Vermilion | 60870 | 74.72 |
| Adams | 51310 | 76.47 |
| Williamson | 51000 | 76.88 |
| Jackson | 47220 | 78.71 |
| Whiteside | 43905 | 75.18 |
| Coles | 43410 | 80.86 |
| Knox | 41175 | 78.13 |
| Ogle | 38895 | 72.86 |
| Henry | 37765 | 74.96 |
| Macoupin | 36700 | 76.92 |
| Stephenson | 36320 | 76.42 |
| Grundy | 35435 | 71.06 |
| Boone | 35330 | 65.26 |
| Franklin | 30340 | 76.77 |
| Jefferson | 29950 | 76.97 |
| Marion | 29935 | 76.13 |
| Livingston | 29885 | 76.82 |
| Clinton | 29090 | 76.97 |
| Fulton | 28755 | 77.74 |
| Woodford | 28525 | 73.64 |
| Morgan | 27750 | 78.07 |
| Lee | 27615 | 77.18 |
| Christian | 26835 | 77.10 |
| McDonough | 26750 | 82.13 |
| Randolph | 26390 | 79.12 |
| Bureau | 26075 | 74.93 |
| Effingham | 25715 | 75.06 |
| Monroe | 24845 | 75.28 |
| Logan | 24090 | 79.56 |
| Montgomery | 23560 | 78.60 |
| Iroquois | 22175 | 74.69 |
| Saline | 19165 | 76.74 |
| Jo Daviess | 17645 | 77.85 |
| Jersey | 17625 | 76.83 |
| Perry | 17535 | 78.69 |
| Shelby | 17300 | 77.53 |
| Fayette | 16685 | 75.57 |
| Crawford | 15535 | 78.56 |
| Lawrence | 15255 | 90.91 |
| Hancock | 14880 | 78.05 |
| Edgar | 14315 | 77.32 |
| Douglas | 14295 | 71.80 |
| Union | 13730 | 77.14 |
| Bond | 13595 | 76.55 |
| Warren | 13335 | 75.23 |
| Wayne | 12925 | 77.28 |
| De Witt | 12820 | 77.42 |
| Mercer | 12660 | 77.10 |
| Piatt | 12660 | 75.90 |
| Pike | 12500 | 76.06 |
| Clark | 12480 | 76.31 |
| Richland | 12465 | 77.04 |
| Carroll | 12020 | 78.36 |
| Massac | 11840 | 77.03 |
| White | 11525 | 78.48 |
| Washington | 11410 | 77.67 |
| Mason | 11385 | 77.79 |
| Moultrie | 11090 | 74.71 |
| Ford | 10650 | 75.83 |
| Greene | 10630 | 76.86 |
| Clay | 10530 | 76.14 |
| Johnson | 10110 | 79.89 |
| Menard | 9735 | 76.47 |
| Marshall | 9715 | 77.32 |
| Wabash | 9200 | 77.08 |
| Cass | 9115 | 67.17 |
| Cumberland | 8395 | 76.01 |
| Jasper | 7460 | 76.87 |
| Hamilton | 6485 | 76.93 |
| Alexander | 6220 | 76.37 |
| Schuyler | 5780 | 77.07 |
| Henderson | 5770 | 79.31 |
| Brown | 5650 | 81.71 |
| Edwards | 5140 | 76.83 |
| Putnam | 4590 | 76.88 |
| Stark | 4590 | 76.69 |
| Pulaski | 4565 | 74.78 |
| Gallatin | 4425 | 79.16 |
| Scott | 4020 | 75.56 |
| Calhoun | 3915 | 77.30 |
| Pope | 3575 | 81.25 |
| Hardin | 3440 | 79.72 |
