2026 Property Tax Due Dates
Varies (Cook Co.: March 1)
First installment (varies by county)
Varies (Cook Co.: August 1)
Second installment
Payment Methods
Online, Mail, In-Person
Will County Treasurer
How to Pay
Online
Pay using credit card or e-check
By Mail
Mail check payable to Will County Treasurer
In Person
Visit the Treasurer's office — 302 N Chicago St, Joliet IL 60432, Mon-Fri 8:30am - 4:30pm
Other Counties in Illinois
About Will County
Will County is located in the northeastern part of the state of Illinois. According to the 2020 census, it had a population of 696,355, an increase of 2.8% from 677,560 in 2010, making it Illinois's fourth-most populous county.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
Get Deadline Reminders
We'll email you 2 weeks before your property taxes are due.
Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.