Thornton 2020

Reassessment notices for properties in Thornton were mailed to property owners on August 21, 2020. The property values on these notices have been adjusted, when appropriate, with a COVID-19 Adjustment based on our Office's estimates of economic effects of COVID-19.

Note: Due to a processing error, some single-family home parcels did not receive the COVID Adjustment calculated for homes in their neighborhood. The Assessor’s Office will correct this processing error automatically. Affected taxpayers do not need to take any action. Read more here (Español).

For more details, read the full reports below.

Thornton 2020

Residential Report:

Property type Property count Median 2019 Sale Price Median COVID Adjustment Median 2020 CCAO Estimated Fair Market Value Median change in 2017-2020 CCAO Estimated Fair Market Value
Single-family homes 50,206 $95,000 -10.1% $86,440 6%
Condos (class 2-99) 3,191 $41,000 -10.1% $43,240 -7%
Apartments of 2-6 units 3,112 $124,000 -12.8% $135,080 -1%


Read the full 2020 Thornton Residential Reassessment Report for more real estate data, COVID-19 adjustments, and reassessment data for each neighborhood.

Interactive Map:

Thornton map

Find your neighborhood, and data about single-family homes in Thornton, on the interactive map.

  • number of homes and most common type of single-family homes in each neighborhood
  • sale data for each neighborhood
  • assessment data for each neighborhood
  • note: to see COVID-19 Adjustments for each neighborhood, please read the full Thornton report.
    • For more details on how COVID-19 Adjustments were calculated, see our report.

Commercial Report:

  • 534 apartment buildings
  • 355 office buildings
  • 2110 commercial/retail buildings
  • 681 industrial buildings

Read the full 2020 Thornton Commercial Reassessment Report for more real estate and assessment data about initial estimates of commercial property values. Note that the CCAO is in the process of developing COVID-19 Adjustments to property values. 

Total Assessed Value Changes

Initial property assessments are determined by the Assessor's Office after the office has heard all assessment appeals. Property owners can also file an appeal with the Cook County Board of Review before final assessed values are set.

The following report details the effects of appeals at the Board of Review on the assessed value of Thornton Township as well as the largest parcels in this township.

Thornton 2020 Total Assessed Value Report

For a complete dashboard of 2020 total assessed values for each township, read the Township Assessed Value Report: Tax Year 2020.

Watch a Virtual Seminar

The Assessor's Office staff hosts virtual events to provide information and answer your questions about reassessments and appeals. The video below is an informational seminar that covers the appeal process and the Residential Report for Thornton Township featuring Cook County Assessor Kaegi and Thorton Township Assessor Holbert.

South Suburban Town Hall: Property Tax Assessments & Appeals

Join Cook County Assessor Fritz Kaegi and Thornton Township Assessor Cassandra Holbert for a Town Hall meeting on property assessments.

Posted by Cook County Assessor's Office on Wednesday, September 9, 2020