Real Estate Property Tax Payments

The Rock Island County Collector will mail real estate tax bills on or before May 16, 2025. Online payments will be accepted after that date.


Due dates for 2024 Real Estate Taxes, payable in 2025 are as follows:

  • 1st Installment: Wednesday, June 18, 2025.

  • 2nd Installment: Monday, August 18, 2025.

  • 3rd Installment: Thursday, September 18, 2025.

  • 4th Installment: Tuesday, November 18, 2025.


Options for Paying Your Real Estate Property 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 18, 2025. 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 and mobile wallets through November 18, 2025 (processing fees up to 2.45% apply*). No personal or business checks, or credit/debit cards are accepted after November 18, 2025. 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/credit card or mobile wallet (processing fees apply*) by clicking here. You can also enroll in automatic payments. For more information about paying by e-check, debit, or credit card, click here. Last day to pay online is Tuesday, November 18, 2025, at 11:55 pm.


By phone: Dial 309-518-9200 and pay using e-check, debit/credit card or mobile wallet (processing fees apply*). Se habla español. Last day to pay by phone is Wednesday, November 18, 2025.


*Processing fees:

  • $1.00 E-Check processing fee.

  • 2.45% Credit/Debit Card and Mobile Wallet 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 on escrow/mortgage company payments.


NOTE: 

  • 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.


Additional Tax Bill Information

Changing Your Address

If you are the owner, trustee, or power of attorney for a property and you have a change in your billing address, you will need to fill out a "Property Tax Bill Change of Address" form. To obtain the form, you can stop by the County Treasurer's Office at 1504 Third Avenue in Rock Island, Illinois or you may download the change of address form (PDF) and email, mail, or fax the form back to the Treasurer’s Office.

Obtaining a Copy of a Bill

You may purchase a duplicate tax bill for a $2 charge. Please contact the Treasurer’s Office for details. Make checks payable and send to:

Rock Island County Treasurer

1504 3rd Avenue

Rock Island, IL 61201

Banks / Mortgage Companies

INFORMATION FOR BANKS / MORTGAGE COMPANIES ONLY: Tax stubs must be presented with payment if not set up for online payments through Autoagent. Mortgage companies will be charged $5 memo bill fee per parcel/payment in lieu of payment stubs. The $5 memo bill fee must be on a separate check from the tax payment.

Prior Years

Use the online Devnet wEdge tool to search for your property information and check your current & prior year tax information. You can choose from prior years going back to 2003 by changing the Tax Year tab in the upper-left corner. Click here to view the disclaimer and use the Devnet wEdge tool.

Returned Checks

A $30 service fee will be charged for all returned payments.