The Illinois vote for president by county may be seen here. Click “Download Vote Totals” and then choose the general election of 2024.
The write-in vote for Jill Stein, 31,023, is unusually high for a general election presidential candidate. If one examines the vote by county, one can see that 77% of her votes came from Cook and DuPage Counties, even though those two counties accounted for only 45% of the statewide vote.
In DuPage County she got 1.34% of the total presidential vote, and in Cook County she got .85%.