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

County News

Publication Listing

September 17, 2022: The Chief County Assessment Office (CCAO) has published the 2022 assessed values for Rock Island County in the Dispatch and the Rock Island Argus on Saturday, September 17, 2022. The listing is also available on this website. The last day to appeal to the Board of Review will be Monday, October 17, 2022. Click here to go to the 2022 Assessment Changes page of our site.  

Board of Review Now Accepting Complaints

The Board of Review is now accepting assessment complaints through October 17, 2022. Learn More . . .  

Real Estate Tax Bills.

Louisa A. Ewert, Rock Island County Treasurer, announces the mailing of 63,765 Rock Island County Real Estate tax bills totaling more than $272,304,717.52. These statements will be mailed out on Friday May 6th, 2022.  Due dates are June 9th, August 9th, September 9th and November 9th. Learn more...


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  

Press Release From Louisa Ewert, Rock Island County Treasurer

Louisa Ewert, Rock Island County Treasurer announces that she will not run for re-election when her term ends on November 30, 2022. Click Here to see the details.  

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. 


Rock Island County 2021 Fiscal Year Budget Book


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.