Cook County Second Installment Property Tax Bill Still Delayed

LEMONT, IL — The Lemont Township Assessor's Office has shared that the 2024 second installment property tax bills are still delayed.

"For decades, the county agencies involved in preparing property tax bills have been using a 1980s-era mainframe computer system," the Township said. "The county has been phasing out the old mainframe for the last few years, but 2025 marks the first years in which the old system will be completely phased out."

Typically, the second installment bills are mailed out in June and due in August. That is not the case this year.

The Township said the bills are still delayed due to the ongoing technical upgrade issues at the Cook County Assessor's Office.

"In addition, as of this report, there is currently no delay in the issuing of the first installment of the 2025 Cook County property tax bills," the Township said.