Rock Island County Treasurer's Office

Phone: 309-558-3510


Office location: 1504 3rd Avenue, Rock Island, IL 61201

Normal business hours: Monday through Friday, 8 am to 4:30 pm. Closed for holidays, and weather, health, or safety emergencies.

Nick Camlin, Treasurer



Hello and thank you for visiting the Rock Island County Treasurer's page on the Illinois County Treasurers' Association website!

The Treasurer's Office provides many important services for taxpayers and taxing bodies alike. Among other duties, the Treasurer is responsible for billing and collecting property taxes, and managing & investing public monies. Visit the official Rock Island County Treasurer's website to view  your property tax information, check exemptions that can lower your taxes, and pay your property taxes online, among other services.

I am committed to leading Rock Island County with integrity and professionalism. If you have comments or suggestions for how we can better serve you and your family, please contact me.

Thank you once again! It is my honor and privilege to serve you.

Nick Camlin
Rock Island County Treasurer


Real Estate Property Tax Payments:

The Rock Island County Collector will mail real estate tax bills on or before May 6, 2024. Online payments will be accepted after that date.

Due Dates for the 2023 Real Estate Taxes, payable in 2024 are as follows:

  • 1st Installment: Thursday, June 6, 2024.

  • 2nd Installment: Tuesday, August 6, 2024. 

  • 3rd Installment: Friday, September 6, 2024. 

  • 4th Installment: Wednesday, November 6, 2024.


Mobile Home Tax Payments:

Mobile Home Taxes are due on Tuesday, July 9, 2024.

Taxes not paid by July 9, 2024, will be charged $25 per month in interest, up to $100.


Options for Paying Your Real Estate Property Taxes or Mobile Home Taxes:

At your bank/credit union: Click here for details and a list of banks and credit unions that accept property tax payments on our behalf through November 6, 2024. Bring your entire bill with stubs. No credit/debit cards.

By mail: Send your check with the payment stub to the Rock Island County Collector, PO Box 3277, Rock Island, IL 61204-3277. Mailed payments must be postmarked on or before the due date to avoid penalty. Click here for more details about paying by mail.

At our office: Pay in-person at the Rock Island County Office Building, 1504 3rd Avenue, Rock Island, IL 61201. We accept cash, check, cashier’s check or money order. For your convenience: we accept in-person credit/debit cards (processing fees up to 2.45% apply*) through November 8, 2024. No personal or business checks are accepted after November 25, 2024. Click here for more details about paying in-person at the Treasurer’s Office.

Drive-up Drop Box: Drop an envelope with your payment & stub inside the box located in the alley/parking lot behind the County Office Building. 

Online: Pay using e-check, debit or credit card (processing fees apply*) by clicking here. You can also enroll in automatic payments and email reminders.

By phone: Dial 309-518-9200 and pay using e-check, debit or credit card (processing fees apply*). Se habla español.

*Processing fees:

  • $1.00 E-Check processing fee.

  • 2.45% Credit/Debit Card processing fee (or $2.00 for transactions under $82.00).

  • Note: processing/convenience fees are not charged by the Rock Island County Treasurer’s Office; it is the fee of the third-party credit card processor.

Escrow payments: If your mortgage company is to pay the bill, it may be indicated in the shaded area of each stub on your tax bill, or it is your responsibility to forward a copy to the mortgage company for payment. Click here for more details about escrow/mortgage company payments.


  • Tax installments must be paid in sequence order on or before the due dates listed to avoid interest penalty. 

  • Shortly after the fourth installment is due (approximately the first week of December), you will receive a certified notice of delinquency and publishing in the newspaper for any amounts owed with an additional fee of $10. Read such notices carefully to pay.


Delinquent Taxes and Tax Sale:

Any real estate property or mobile home that has outstanding taxes owed as of December 2, 2024, will be sent a certified notice, published in the local newspapers, and charged an additional $10 fee.

The last day that real estate property and mobile home taxes can be paid in the Treasurer’s Office is December 30, 2024. Mobile Home Taxes billed in 2024 that are not paid by December 30, 2024, will be sold at the annual Tax Sale. The annual Tax Sale will take place on December 31, 2024.