Illinois Citizen Voting-age Population By County in 2013 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2013, the citizen voting-age population for Illinois was 8,883,985 and represented 69.14% of the total Illinois population.
Among all Illinois counties, Cook had the highest citizen voting-age population (3.45M), followed by DuPage (627.68K), and Lake (452.47K).
In terms of percentages, Brown had the highest percentage of its population being citizens of voting-age (82.33%), followed by McDonough (82.07%), and Pope (81.98%).
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 | 3445565 | 66.10 |
| DuPage | 627685 | 68.02 |
| Lake | 452470 | 64.44 |
| Will | 451560 | 66.44 |
| Kane | 314565 | 60.68 |
| McHenry | 212200 | 68.88 |
| Winnebago | 209915 | 71.55 |
| Madison | 205160 | 76.44 |
| St. Clair | 198950 | 73.98 |
| Sangamon | 148615 | 74.96 |
| Champaign | 148385 | 73.30 |
| Peoria | 137485 | 73.48 |
| McLean | 126485 | 73.86 |
| Rock Island | 108380 | 73.49 |
| Tazewell | 103165 | 76.00 |
| LaSalle | 85630 | 75.58 |
| Macon | 84145 | 76.32 |
| Kankakee | 81820 | 72.41 |
| DeKalb | 77425 | 73.86 |
| Kendall | 76160 | 65.45 |
| Vermilion | 60565 | 74.64 |
| Adams | 51390 | 76.53 |
| Williamson | 51245 | 76.94 |
| Jackson | 47300 | 78.76 |
| Whiteside | 43920 | 75.53 |
| Coles | 43490 | 80.94 |
| Knox | 41160 | 78.33 |
| Ogle | 38900 | 73.27 |
| Henry | 37855 | 75.32 |
| Macoupin | 36670 | 77.27 |
| Stephenson | 36345 | 76.82 |
| Boone | 35665 | 65.96 |
| Grundy | 35660 | 71.23 |
| Franklin | 30365 | 76.93 |
| Livingston | 30105 | 77.82 |
| Jefferson | 29990 | 77.35 |
| Marion | 29830 | 76.35 |
| Clinton | 29245 | 77.18 |
| Fulton | 28810 | 78.22 |
| Woodford | 28800 | 74.03 |
| Morgan | 27690 | 78.17 |
| Lee | 27615 | 77.71 |
| Christian | 26930 | 77.72 |
| McDonough | 26715 | 82.07 |
| Randolph | 26245 | 79.00 |
| Bureau | 25995 | 75.14 |
| Effingham | 25775 | 75.20 |
| Monroe | 25090 | 75.62 |
| Logan | 24060 | 79.74 |
| Montgomery | 23390 | 78.28 |
| Iroquois | 22045 | 74.87 |
| Saline | 19215 | 77.01 |
| Jo Daviess | 17695 | 78.30 |
| Jersey | 17590 | 76.98 |
| Perry | 17505 | 78.92 |
| Shelby | 17280 | 77.61 |
| Fayette | 16790 | 76.01 |
| Crawford | 15545 | 78.89 |
| Hancock | 14795 | 78.07 |
| Douglas | 14315 | 71.94 |
| Edgar | 14260 | 77.75 |
| Union | 13725 | 77.46 |
| Bond | 13415 | 75.94 |
| Warren | 13200 | 74.32 |
| Lawrence | 13135 | 78.65 |
| Wayne | 12830 | 76.94 |
| De Witt | 12770 | 77.35 |
| Piatt | 12660 | 76.17 |
| Mercer | 12590 | 77.12 |
| Richland | 12545 | 77.37 |
| Pike | 12480 | 76.40 |
| Clark | 12425 | 76.30 |
| Carroll | 11925 | 78.45 |
| Massac | 11830 | 77.42 |
| White | 11430 | 78.13 |
| Washington | 11395 | 77.92 |
| Mason | 11345 | 78.19 |
| Moultrie | 11110 | 74.71 |
| Greene | 10675 | 77.47 |
| Ford | 10640 | 76.05 |
| Clay | 10510 | 76.46 |
| Johnson | 10180 | 80.38 |
| Menard | 9750 | 76.86 |
| Marshall | 9685 | 77.76 |
| Cass | 9145 | 67.59 |
| Wabash | 9035 | 76.25 |
| Cumberland | 8390 | 76.17 |
| Jasper | 7445 | 76.91 |
| Hamilton | 6460 | 76.77 |
| Alexander | 6085 | 76.25 |
| Schuyler | 5925 | 79.11 |
| Henderson | 5700 | 79.33 |
| Brown | 5685 | 82.33 |
| Edwards | 5155 | 77.00 |
| Putnam | 4620 | 77.97 |
| Stark | 4595 | 77.36 |
| Pulaski | 4570 | 75.72 |
| Gallatin | 4370 | 79.24 |
| Scott | 4055 | 76.65 |
| Calhoun | 3925 | 77.57 |
| Pope | 3595 | 81.98 |
| Hardin | 3350 | 78.36 |
