Will County Supervisor of Assessments

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General Contact Inquiry Form

STOP - If your question is about your tax bill, copies, payment status, etc., the Supervisor of Assessments doesn’t handle the tax bill management. You would need to call the Will County Treasurer’s office at (815) 740-4675 or by visiting them on the web at https://willcounty.gov/County-Offices/Finance-and-Revenue/Treasurer-Office.

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Address Information	Phone Information	Hours of Operation:
Will County Supervisor of Assessments Office 302 N. Chicago Street Second Floor Joliet, Illinois 60432	Assessments: (815) 740-4648 Mapping: (815) 740-4664	Monday - Friday, 8:30 am to 4:30 pm