Washington County, Illinois

Look up your Washington County property assessment.

Find a Washington 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 Washington County yet.

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

2026 filing window not verified

HomeTaxChallenge has not verified the Washington County 2026 Board of Review filing window. 2026 deadline: TBD. Check with your assessor (Washington County Supervisor of Assessments) or the Washington 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 Washington County parcel number like 120621181003 or a street address.