2020 Cook County Property Tax Appeal Dates and Deadlines
| Township |
Assessment Notices Mailed |
Assessor’s Appeal Period Closed | Board of Review Appeals Open |
Board of Review Appeals Closed |
| Barrington | 3/12/20 | 5/1/20 | 11/2/20 | 12/1/20 |
| Berwyn** | 5/18/20 | 6/23/20 | 10/26/20 | 11/24/20 |
| Bloom** | 10/8/20 | 11/12/20 | 12/16/20 | 1/14/21 |
| Bremen** | 9/16/20 | 10/22/20 | 12/7/20 | 1/5/21 |
| Calumet** | 4/20/20 | 5/26/20 | 9/14/20 | 10/13/20 |
| Cicero** | 7/24/20 | 8/31/20 | 11/16/20 | 12/15/20 |
| Elk Grove | 6/29/20 | 8/4/20 | 11/2/20 | 12/1/20 |
| Evanston | 2/19/20 | 5/1/20 | 10/14/20 | 11/12/20 |
| Hanover | 9/9/20 | 10/15/20 | 12/16/20 | 1/14/21 |
| Hyde Park | 8/20/20 | 9/24/20 | 12/7/20 | 1/5/21 |
| Jefferson | 8/28/20 | 10/2/20 | 12/7/20 | 1/5/21 |
| Lake | 9/23/20 | 10/29/20 | 12/23/20 | 1/21/21 |
| Lake View | 6/6/20 | 8/5/20 | 11/16/20 | 12/15/20 |
| Lemont** | 5/27/20 | 7/2/20 | 10/26/20 | 11/24/20 |
| Leyden | 6/23/20 | 7/29/20 | 11/2/20 | 12/1/20 |
| Lyons** | 7/10/20 | 8/14/20 | 11/16/20 | 12/15/20 |
| Maine | 7/24/20 | 8/26/20 | 11/16/20 | 12/15/20 |
| New Trier | 3/5/20 | 5/1/20 | 11/2/20 | 12/1/20 |
| Niles | 9/24/20 | 10/30/20 | 12/16/20 | 1/14/21 |
| North | 9/25/20 | 11/2/20 | 12/23/20 | 1/21/21 |
| Northfield | 9/15/20 | 10/21/20 | 12/16/20 | 1/14/21 |
| Norwood Park | 2/20/20 | 5/1/20 | 9/28/20 | 10/27/20 |
| Oak Park** | 2/27/20 | 5/1/20 | 10/13/20 | 11/1/20 |
| Orland** | 7/22/20 | 8/27/20 | 11/16/20 | 12/15/20 |
| Palatine | 5/6/20 | 6/10/20 | 10/14/20 | 11/12/20 |
| Palos** | 3/13/20 | 5/1/20 | 9/14/20 | 10/13/20 |
| Proviso** | 8/31/20 | 10/5/20 | 12/7/20 | 1/5/21 |
| Rich** | 9/24/20 | 10/30/20 | 12/16/20 | 1/14/21 |
| River Forest** | 2/7/20 | 5/1/20 | 10/13/20 | 11/1/20 |
| Riverside** | 2/10/20 | 5/1/20 | 10/13/20 | 11/1/20 |
| Rogers Park | 2/24/20 | 5/1/20 | 9/14/20 | 10/13/20 |
| Schaumburg | 7/29/20 | 9/1/20 | 11/16/20 | 12/15/20 |
| South | 10/6/20 | 11/10/20 | 12/30/20 | 1/29/21 |
| Stickney** | 6/26/20 | 8/3/20 | 10/26/20 | 11/24/20 |
| Thornton** | 8/21/20 | 9/25/20 | 12/7/20 | 1/5/21 |
| West | 6/12/20 | 7/20/20 | 10/26/20 | 11/24/20 |
| Wheeling | 5/14/20 | 6/19/20 | 11/2/20 | 12/1/20 |
| Worth** | 6/17/20 | 7/23/20 | 10/26/20 | 11/24/20 |