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:

We have compiled a report of statistical information regarding the Assessment Office and Board of Review. Click here PDF Document to view the 2018 Annual Report.

Assessments are determined by your township assessor for a four year period. Within this four year period, 2019-2022, the Illinois Property Tax Code ExternalLink.gif calls this the "general" assessment years. The four year period we are currently in will start with the 2019 assessment year and continue through the 2022 assessment year.

In the first year of the general assessment period, which will be 2019, 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.

In early fall, we will be mailing a notice of assessments to all taxpayers. This notice will provide you with your total assessment as well as what homestead exemptions you are currently receiving. This information will also be available on our website at

Your assessments will also be published in the Dispatch/Argus newspaper at the time of our mailing the assessment notice.

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

Annual Instructional for Assessors
Wednesday, December 18, 2019 at 1:00 P.M. The Supervisor of Assessments Annual Instructional Assembly for Township Assessors is being held on Wednesday, December 18, 2019 at 1:00 P.M. Learn More . . .
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.
Disaster Area Reassessments
As of May 3rd, 2019, Governor Pritzker declared Rock Island County a major disaster area due to structural damage from flooding. Learn more...

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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