County record · FIPS 17031
Cook County, IL
A joined view of reported 2024 election administration and the 2020–2024 American Community Survey profile for Illinois.
Population5,182,090ACS 2020–2024
Registered voters1,800,799100% jurisdiction coverage
Voters1,112,978100% jurisdiction coverage
Registered turnout61.80%Reported voters / registration
Ballot administration
Mail-ballot record
| Stage | Reported ballots | Jurisdiction coverage |
|---|---|---|
| Transmitted | 234,452 | 100% |
| Returned | 193,945 | 100% |
| Counted | 192,218 | 100% |
| Rejected | 1,727 | 100% |
Return rate82.72%
Rejection rate0.89%
A blank means the source did not provide enough information. It does not mean zero ballots.
Administrative capacity
Election infrastructure
Polling places878100% coverage
Poll workers6,668100% coverage
Drop boxes54100% coverage
Provisional ballots cast1,174100% coverage
Provisional acceptance39.10%Counted / cast where reported
Cross-state twin
Cook County, IL ↔ Essex County, NJ
55.9% profile similarityPopulation5,182,090863,002
Median household income$83,498$80,789
Poverty13.49%14.64%
No vehicle18.01%20.99%
The closest profile among counties in other states. Similarity uses seven ACS measures and does not include vote choice.
Reported detail
Mail rejection reasons
| Reason | Ballots |
|---|---|
| Signature mismatch | 1,044 |
| Late | 441 |
| Missing signature | 159 |
| Deceased | 1 |
| Already voted | 1 |