| Population | County | % Correct |
|---|---|---|
| 5,106,780 | {Cook} County | 100%
|
| 690,431 | {Lake} County | 91%
|
| 914,269 | {DuPage} County | 83%
|
| 209,231 | {Champaign} County | 78%
|
| 176,297 | {Peoria} County | 78%
|
| 689,931 | {Will} County | 78%
|
| 531,769 | {Kane} County | 70%
|
| 131,536 | {Kendall} County | 70%
|
| 280,456 | {Winnebago} County | 70%
|
| 306,820 | {McHenry} County | 61%
|
| 192,738 | {Sangamon} County | 61%
|
| 140,395 | {Rock Island} County | 57%
|
| 169,731 | {McLean} County | 52%
|
| 256,338 | {St. Clair} County | 43%
|
| 260,846 | {Madison} County | 39%
|