Illinois Citizen Voting-age Population By County in 2014 (ACS-5Yrs)
Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2014, the citizen voting-age population for Illinois was 8,939,895 and represented 69.47% of the total Illinois population.
Among all Illinois counties, Cook had the highest citizen voting-age population (3.48M), followed by DuPage (631.58K), and Will (457.00K).
In terms of percentages, Brown had the highest percentage of its population being citizens of voting-age (82.78%), followed by Pope (82.45%), and McDonough (81.74%).
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 | 3477800 | 66.53 |
| DuPage | 631575 | 68.17 |
| Will | 457000 | 67.00 |
| Lake | 456090 | 64.86 |
| Kane | 319135 | 61.15 |
| McHenry | 214115 | 69.54 |
| Winnebago | 209460 | 71.73 |
| Madison | 205230 | 76.60 |
| St. Clair | 199115 | 74.18 |
| Champaign | 149745 | 73.33 |
| Sangamon | 149330 | 75.11 |
| Peoria | 137305 | 73.35 |
| McLean | 127545 | 73.99 |
| Rock Island | 108380 | 73.75 |
| Tazewell | 103410 | 76.11 |
| LaSalle | 85630 | 75.98 |
| Macon | 83650 | 76.16 |
| Kankakee | 81875 | 72.66 |
| Kendall | 78145 | 66.11 |
| DeKalb | 77345 | 73.72 |
| Vermilion | 60325 | 74.68 |
| Williamson | 51420 | 76.97 |
| Adams | 51335 | 76.49 |
| Jackson | 47235 | 78.56 |
| Whiteside | 43765 | 75.88 |
| Coles | 43395 | 80.88 |
| Knox | 41205 | 78.57 |
| Ogle | 38885 | 73.67 |
| Henry | 37800 | 75.56 |
| Macoupin | 36630 | 77.56 |
| Stephenson | 36325 | 77.20 |
| Grundy | 36135 | 72.02 |
| Boone | 35985 | 66.63 |
| Franklin | 30655 | 77.07 |
| Jefferson | 29990 | 77.46 |
| Livingston | 29925 | 77.78 |
| Marion | 29740 | 76.41 |
| Clinton | 29410 | 77.50 |
| Woodford | 28995 | 74.41 |
| Fulton | 28675 | 78.32 |
| Morgan | 27725 | 78.61 |
| Lee | 27390 | 77.70 |
| Christian | 26930 | 78.25 |
| McDonough | 26475 | 81.74 |
| Randolph | 26385 | 79.74 |
| Effingham | 25845 | 75.39 |
| Bureau | 25830 | 75.18 |
| Monroe | 25530 | 76.49 |
| Logan | 24020 | 79.95 |
| Montgomery | 23500 | 79.02 |
| Iroquois | 22010 | 75.20 |
| Saline | 19180 | 77.11 |
| Jo Daviess | 17705 | 78.95 |
| Jersey | 17610 | 77.41 |
| Perry | 17495 | 79.40 |
| Shelby | 17310 | 77.92 |
| Fayette | 17060 | 77.41 |
| Crawford | 15510 | 79.03 |
| Hancock | 14750 | 78.42 |
| Douglas | 14305 | 72.01 |
| Edgar | 14180 | 78.04 |
| Bond | 13855 | 78.86 |
| Union | 13655 | 77.50 |
| Lawrence | 13190 | 78.86 |
| Warren | 13125 | 73.80 |
| Wayne | 12810 | 77.05 |
| De Witt | 12765 | 77.55 |
| Piatt | 12680 | 76.62 |
| Mercer | 12545 | 77.41 |
| Pike | 12535 | 77.16 |
| Richland | 12475 | 77.27 |
| Clark | 12400 | 76.36 |
| Carroll | 11775 | 78.37 |
| Massac | 11730 | 77.43 |
| White | 11395 | 78.32 |
| Washington | 11375 | 78.31 |
| Mason | 11175 | 78.09 |
| Moultrie | 11170 | 74.99 |
| Greene | 10620 | 77.66 |
| Ford | 10590 | 76.16 |
| Clay | 10395 | 76.02 |
| Johnson | 10265 | 81.15 |
| Menard | 9745 | 76.97 |
| Marshall | 9600 | 77.92 |
| Cass | 9120 | 67.86 |
| Wabash | 9095 | 77.54 |
| Cumberland | 8360 | 76.35 |
| Jasper | 7400 | 76.61 |
| Hamilton | 6415 | 76.64 |
| Alexander | 5945 | 76.02 |
| Schuyler | 5915 | 79.34 |
| Brown | 5695 | 82.78 |
| Henderson | 5670 | 80.14 |
| Edwards | 5105 | 76.36 |
| Putnam | 4590 | 77.86 |
| Stark | 4580 | 77.76 |
| Pulaski | 4525 | 75.86 |
| Gallatin | 4305 | 79.14 |
| Scott | 4005 | 76.14 |
| Calhoun | 3950 | 78.45 |
| Pope | 3595 | 82.45 |
| Hardin | 3315 | 78.46 |
