Average assessment value in Illinois, United States

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Assessment value description

The most recent official assessed value of this property.

This is usually the value property taxes are calculated on, and it may differ from current market value. Check the assessment year field to see when this value was determined.

In Canada and the United States this is the value on the property tax roll of the local assessment authority: a city, a county or a provincial assessment agency.

Average assessment value for residential properties in Illinois

MedianMeanMode
$255,180
From 260,432 homes
$284,293
From 260,432 homes
-

Data updated November 14, 2026

Average assessment value for residential for cities in Illinois

LocationMedianMeanMode
Abingdon---
Abington---
Adair---
Adams---
Adams County---
Addieville---
Addison
$352,827
Includes inferred values
$381,848
Includes inferred values
-
Adeline---
Aetna---
Afton---

All cities in Illinois