Assessment Office:


Chief County Assessment Office

From Your Chief County Assessor

Our Mission Statement: To provide fair, accurate, and equitable assessments to all property owners in Rock Island County

To All Rock Island County Taxpayers:

I have compiled a report of statistical information regarding the Assessment Office and Board of Review. Click here PDF Document to view the 2017 Annual Report.

On Saturday, September 15, 2018, I am publishing our listing of tentative assessed values for the 2018 year. Click here to view the publication listing.

The Board of Review will be accepting assessment complaints until Monday, October 15, 2018. Click here to learn more regarding the appeal procedures, and to download forms if necessary.

These assessments are determined by your township assessor for a four year period. Within this four year period, the Illinois Property Tax Code ExternalLink.gif calls the first year the "general" assessment year. The next three years are called the "non general" assessment years. The four year period we are currently in started with the 2015 assessment year and continues through the 2018 assessment year. This 2018 non general assessment year is the fourth year of this four year period.

The township assessor's duty during non general assessment years, 2016 through 2018, is to value new property that is not yet on the assessment rolls and to adjust assessments for properties valued during the general assessment year to equalize assessments when appropriate. Using equalization factors, they may apply these factors to all parcels in the township or to classes of property. If the township assessor changes your assessment for any year, you will be notified by mail from the County Assessment Office.

In the first year of the general assessment period, which was 2015, the Illinois Property Tax Code (Code) directs the township assessor "in person or by deputy (to) actually view and determine as near as practicable the value of each property listed for taxation as of January 1 of that year...."

The Property Tax Code informs assessment officials that the property record system shall include up-to-date and complete tax maps, ownership lists, valuation standards (calculation used to value your property) and property record cards, including appraisals, for all or any part of the property in the township. The township assessor maintains property record cards and are available by contacting your township assessor. These records are public records, and shall be available for public inspection during business hours, subject to reasonable rules and regulations of the custodian of the records.

If your assessment changes for 2018, the Property Tax Code requires that I mail a notice and publish in the newspaper this change. Your assessment may still change by an equalization factor applied by the Chief County Assessment Officer that is determined by a sales ratio study that was performed for each township.

Should you have any questions about the assessment process, feel free to contact me.

FOIA Policy PDF Document


Larry A. Wilson
Chief County Assessor

Chief County Assessor/Board of Review - Announcements

Tax Bill Frequently Asked Questions
Do you have questions regarding your tax bill? Click here PDF Document to view our tax bill frequently asked questions.

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Larry A. Wilson - Chief County Assessor Click to send e-mail 
Rock Island County Office Building (map ExternalLink.gif)
Second Floor - 1504 Third Avenue, Rock Island IL, 61201-8624

Phone: (309) 558-3660     Fax: (309) 558-3658     Hours: 8:00 AM to 4:30 PM - Monday thru Friday