Cook County, Illinois

Cook County Property Taxes
Property taxes in Cook County are proportional to assessed property values. Therefore, a higher assessed property value means a higher tax bill. In an effort to estimate fair market prices, the Assessor re-estimates a property's value once every 3 years (each year 1/3 of Cook County properties are reassessed).
By law, the assessed value of every property in Cook County may be appealed each year even though the Assessor re-values only 1/3 of them.
If a property's assessed value is successfully appealed during a reassessment year, this means that the property owner will save money for 3 straight years.
Townships
Cook County has 38 townships:
Township | Appeals Opened | Appeals Closed |
---|---|---|
River Forest | 2/7/2020 | 5/1/2020 |
Riverside | 2/11/2020 | 5/1/2020 |
Evanston | 2/19/2020 | 5/1/2020 |
Norwood Park | 2/20/2020 | 5/1/2020 |
Rogers Park | 2/24/2020 | 5/1/2020 |
Oak Park | 2/27/2020 | 5/1/2020 |
New Trier | 3/5/2020 | 5/1/2020 |
Barrington | 3/13/2020 | 5/1/2020 |
Palos | 3/13/2020 | 5/1/2020 |
Calumet | 4/20/2020 | 5/26/2020 |
Palatine | 5/6/2020 | 6/10/2020 |
Wheeling | 5/14/2020 | 6/19/2020 |
Berwyn | 5/18/2020 | 6/23/2020 |
Lemont | 5/27/2020 | 7/2/2020 |
West Chicago | 6/12/2020 | 7/20/2020 |
Worth | 6/17/2020 | 7/23/2020 |
Leyden | 6/23/2020 | 7/29/2020 |
Stickney | 6/26/2020 | 8/3/2020 |
Elk Grove | 6/26/2020 | 8/4/2020 |
Lake View | 7/1/2020 | 8/5/2020 |
Lyons | 7/10/2020 | 8/14/2020 |
Maine | 7/21/2020 | 8/26/2020 |
Orland | 7/22/2020 | 8/27/2020 |
Cicero | 7/24/2020 | 8/31/2020 |
Schaumburg | 7/29/2020 | 9/1/2020 |
Hyde Park | 8/20/2020 | 9/24/2020 |
Thornton | 8/21/2020 | 9/25/2020 |
Jefferson | 8/28/2020 | 10/2/2020 |
Proviso | 8/31/2020 | 10/5/2020 |
Hanover | 9/9/2020 | 10/15/2020 |
Northfield | 9/15/2020 | 10/21/2020 |
Bremen | 9/16/2020 | 10/22/2020 |
Lake | 9/23/2020 | 10/29/2020 |
Niles | 9/24/2020 | 10/30/2020 |
Rich | 9/24/2020 | 10/30/2020 |
North Chicago | 9/25/2020 | 11/2/2020 |
South Chicago | 10/6/2020 | 11/10/2020 |
Bloom | 10/8/2020 | 11/12/2020 |