Mercer County, Illinois

Look up your Mercer County property assessment.

Find a Mercer County parcel by address or PIN in the county's public wEDGE records and learn how a Board of Review appeal works. Comparable-sales screening and savings estimates are not available for Mercer County yet.

County-confirmed parcel lookup Board of Review filing guidance
Tier 1 county: comparable-sales screening and savings estimates are not available for Mercer County yet.

2026 filing window not verified

HomeTaxChallenge has not verified the Mercer County 2026 Board of Review filing window. 2026 deadline: TBD. Check with your assessor (Mercer County Supervisor of Assessments) or the Mercer County Board of Review for the current deadline before filing. Illinois appeals are filed with the county Board of Review; the next level is the Property Tax Appeal Board (PTAB).

Step 1

Find the property

Enter a Mercer County parcel number like 090920111001 or a street address.