Keyes finished with 27% of the vote despite winning a small number of southern Illinois counties.

The following Illinois counties are drained in part by the Wood River:

It leads all Illinois counties every year in total deer taken.

Seven Illinois counties are in the area.

Wabash County is one of 17 Illinois counties that use the term precinct.

Ogle County is bordered, on all sides, by other Illinois counties.

Beginning in 2000, over 100 major sources of pollution in eight Illinois counties began trading pollution credits.

The Illinois county of Cook was named in his honor.

Salt Creek drains parts of the following Illinois counties:

The student body in the Fall of 2011 came from all 102 Illinois counties, 42 states, and 41 foreign nations.