Mason County, Illinois

Look up your Mason County property assessment.

Find a Mason 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 Mason County yet.

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

2026 filing window not verified

HomeTaxChallenge has not verified the Mason County 2026 Board of Review filing window. 2026 deadline: TBD. Check with your assessor (Mason County Supervisor of Assessments) or the Mason 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 Mason County parcel number like 0836410009 or a street address.