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Rock Island County Mission . . .
"To build the future and improve the quality of life for our community."

County News

Low Income Senior Freeze Applications Mailing

The Rock Island County Chief Assessor's Office will be mailing the Low Income Senior Citizen Assessment Freeze applications on January 30, 2023. All Seniors who received the Low Income Senior Citizen Assessment Freeze Exemption in 2022 will receive these forms. If you have never received this exemption before, you may request an application to be mailed to you by calling (309) 558-3660, or Click the link above to obtain more information regarding the exemption, or to download the application.  

Board of Review Mailing Final Decisions

The Rock Island County Board of Review's date for mailing final decisions is January 27, 2023. The last day to file at the Property Tax Appeal Board is February 27, 2023. Forms can be obtained from the State of Illinois website at http://www.ptab.illinois.gov ExternalLink.gif or at the Supervisor of Assessment's office, 2nd floor, 1504 Third Avenue, Rock Island, IL 61201. Click here PDF Document to view the 2022 Board of Review changes.  

Delinquent Tax Listings December 2022

Delinquent Tax Listings December 2022  

Have You Moved? Let Us Know!

Costing taxpayers hundreds of dollars to re-mail...

Click here to obtain a Change of Name/Address form
OR Contact Rock Island County Treasurer's Office at (309)558-3510

Reapportionment County Board District Map

Google maps version   PDF version  

County Reapportionment & Board Reduction For 2022

Please Join us for an opportunity to learn about the County Reapportionment & Board reduction process. Click here for more details. 


Quad Cities COVID-19 Updates



Courthouse Square Memorial Wall - Presentation

Courthouse Square Memorial wall - Presentation  

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.  

Honor Rewards Program

The Honor Rewards Program is a community service made available through the Recorder's Office to thank and acknowledge our nation's veterans for their sacrifices to our country. Click here to learn more about the discounts and benefits offered.  

Civil War Soldiers' Monument Restoration Project

The Rock Island County Sheriff’s Department, in conjunction with the Rock Island County Historical Society and the Civil War Roundtable of the Quad Cities, are in the process of raising funds for a restoration project. The Civil War Soldiers’ Monument, which is situated on the northeast corner of the Rock Island County Courthouse lawn, is in dire need of repair. Learn more... / View pictures  


  • Great Northwest Region
    Economic Development Region 6
  • Local Workforce Investment Area 13

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Rock Island County Office Building (map ExternalLink.gif)
1504 Third Avenue, Rock Island IL 61201-8624

Phone: See County Directory      Hours: 8:00 AM to 4:30 PM - Monday thru Friday
Pursuant to Public Act 96-856, all Notices of Foreclosure should be directed to: Office of the County Clerk, 1504 Third Avenue, Rock Island IL 61201.