Winnebago County
Watch County Board Meetings Online - Starting on 3/10/16, you will now be able to watch the County Board meetings live online. MORE >

LZ Peace Memorial - The LZ Peace Memorial is a place of honor for those veterans who served our country, in war and in peace. This memorial stands as a testimony to those soldiers from Winnebago County who made the ultimate sacrifice at a time of great conflict. We’re located at Midway Village Museum, 6799 Guilford Road, in Rockford, Illinois. MORE >

Phantom Regiment - The Phantom Regiment is a youth organization dedicated to the development of self-esteem and self-reliance. MORE >

Windsor Lake - Paddle and Trail and the Rockford Park District are looking to make Windsor Lake a year-round facility and would like your input on winter recreational activities! MORE >

Supervisor of Assessments

Our mission: Serve Taxpayers, Township Assessors and the Board of Review in a 

professional, helpful and friendly manner while ensuring the timely and accurate

processing of assessments, exemptions and tax maps.




 ATTENTIONNEW! General Homestead Exemption Application 




 A Brochure with information regarding distress sales is available in the Supervisor of Assessments Office and at the link below:

What Taxpayers Should Know About Distress Sales


The 2016 Instructional Information for Township Assessors is now available to the general public.

The Winnebago County Supervisor of Assessments is required to assemble all Township Assessors annually and instruct them in uniformity of their functions.  The meeting for 2016 assessments was held on December 18, 2015.  The information presented at the meeting also needs to be made available to the general public.  We are making it available by posting it on our website.  This information should serve to keep the taxpaying public better informed and demonstrate our commitment to openness and transparency.

2016 Rental/Owner Occupancy Exemption Application - Now Available!

Select "Homestead Exemption Information" on the right and select the "2016 Rental/Owner Occupancy Exemption Application" form from the drop-down.  Print the form for completion.  The application and a copy of the lease verifying occupancy on January 1, 2016 by the tenant listed on the application are required to qualify for the exemption.  The application and lease are due before April 1, 2016.  


WINGIS Single Family Sales Locator Tool - Now Available!

Select "WINGIS" on the right.
The "Sales Locator" tool link is located on the bottom of the main WINGIS page. 


Winnebago County covers 520 Square Miles and has a population of 295,266 (2010) with 122,144 taxable parcels.

The Supervisor of Assessments Office is responsible for the publication and mailing of Assessment Change Notices on all taxable parcels.  The Office also maintains all records for Homestead Exemptions.  They assist taxpayers with the filing of property tax exemptions and any questions they may have in understanding the assessment process for their property.

The Supervisor of Assessments Office also assists Township Assessors in the performance of their duties, as well assisting the Board of Review in completing their responsibilities to maintain a timely tax cycle.  

Thomas J. Walsh, Supervisor of Assessments: 

Contact Us

404 ELM ST  RM 301
Phone: 815-319-4460
Fax: 815-319-4461
The Supervisor of Assessments office is open Monday through Friday from 8:00 a.m. to 5:00 p.m.


Winnebago County
404 Elm Street
Rockford, IL 61101
OFC: (815) 319-4444

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