Property tax appeal deadlines in Illinois
| Cook County, Illinois | Illinois | Typically 30 days after you receive your reassessment notice. The last date to file is printed on your notice. |
Sources
- Appeals, Cook County Assessor's Office, checked 1 November 2026
- Cook County Board of Review, Cook County Board of Review, checked 1 November 2026
"Secondary" marks a source used only because the official page could not be read.