People enter the Cook County treasurer’s office in downtown Chicago, Nov. 20, 2025. Cook County property taxes are going up again for the vast majority of homeowners and business owners. | Antonio Perez/Chicago Tribune
By A.D. Quig | Chicago Tribune
Cook County property taxes are going up again for the vast majority of homeowners and business operators who will finally get their bills next month after another round of delays.
Of the 1.8 million bills set to hit mailboxes Sept. 1, about 1.3 million residences and 100,000 businesses will see an increase, according to Cook County Treasurer Maria Pappas’ annual analysis.
The total property tax bill for every city, town, school district and other taxing body across Cook County is more than $19.9 billion — an increase of about $744 million (or 3.9%) compared with last year. It’s the 32nd straight annual increase, according to the report.
Nearly all taxing agencies across the county raised their property tax levies this year, the analysis found. About 60% increased them by more than the 3.1% rate of inflation.
Of that new sum, homeowners will pay nearly $600 million, while business properties like offices, factories and big apartment buildings will pay the rest.
The biggest changes will be felt in suburban communities north of North Avenue, who had their properties reassessed in 2025. Growth in home values there “significantly outpaced” those for businesses, the report said, shifting 2% more of the region’s overall tax burden onto homeowners.
Unlike the major spike last cycle that saw a historic 15.7% increase in median bills across the northern suburbs, the median tax bill for homeowners there climbed by 6.7% this year to $8,007, per the analysis.
Report continues here.