Warren County Treasurer





100 W. Broadway
309-734-8536 (fax 309-734-0313)
Monmouth, IL 61462 warrencountytreasurer@outlook.com
Monday - Friday, 8 - 4:30 P.M. www.warrencountyil.com


  Danielle Cox
  Warren County Treasurer
  Description currently not available.


The Warren County Treasurer’s office is located on the 2nd floor of the courthouse.

                      The 2021 pay 2022 Real Estate taxes-Will be in the mail May 25th, 2022.  The due dates are: 

June 27th, 2022, for the 1st installment and September 6th, 2022, for your 2nd installment.  

   Please call if you have any questions.  Thank you for your patience! 






Real Estate Taxes due dates are as close to June 1st and September 1st as possible annually. The Tax Sale is held the 3rd Monday of October each year. We have a County Trustee program and all unsold parcels are purchased by the Trustee. All redemptions made after the Sale are made directly to the County Clerks office (309/734-4612).
We will have a Sealed Bid Sale of County Trustee parcels. Check with the Treasurer each year for the date. Auction books are available for purchase at the Treasurer's Office.

MOBILE HOME TAX COLLECTION: Mobile Home tax bills are due on May 1 of each year. There is a $25.00 monthly delinquent fee after May 1.

ANIMAL CONTROL: Warren County Dog Registrations are due within 30 days of the vaccination for $10.00. Tags are due annually on the anniversary date of registration. Late fees are: From 31 days to 90 days the fee is $20.00. From 91 days to 180 days the fee is $25.00. From 181 days to 365 days is $30.00. After this period it is necessary to call the Treasurer office.
Warren County has a spayed/neuter ordinance in effect. By the dog's second registration the dog must be altered or an ANNUAL FEE of $45.00 is imposed. Registration may be handled by mail if it is not convenient to come to the office. To view a rabies certificate click on the Documents tab on the home page.

The Warren County Treasurer’s Office offers a payment option through GovTechService,Inc. To pay your Warren County taxes over the Internet using most major credit cards:
1.  Go to http://www.govtechtaxpro.com
2.  On the right side, click on search and pay tax bill
3.  Select:  Illinois
4.  Select:  Warren County
5.  Search by either owner name or parcel number.
6.  Check the box of payment and add to shopping cart.
7.  Select:  Method of payment, check box acknowledge service fee and proceed to checkout.
8.  Select:  Pay Credit Card
9.  Enter billing information and credit card information
10. Finish


There will be a convenience fee charged by GovTechService,Inc.

Tax Bill information at https://il1374.cichosting.com/atasportal/


Real Estate Tax Collection
Mobile Home Tax Collection
Sealed Bid Sale
Animal Control Registration (Dog Tags)
Online Tax Payment

Tax Dates To Remember 

01/31/2022                Postmark for Mobile Home Taxes

05/04/2022                Mobile Home Due Date

05/25/2022                Postmark for Real Estate Tax Bills

05/27/2022                Participating Banks will accept Real Estate Tax payments.  Must have your tax bills when making payment.

05/27/2022                Online payments with debit/credit cards can be made.  Above is the link with  Govtechtaxpro.

06/27/2022                1st Installment for Real Estate Taxes

06/28/2022                 1.5% monthly interest will be charged

07/15/2022                 Sealed Bid Auction

09/06/2022                 2nd Installment for Real Estate Taxes

09/07/2022                 1.5% monthly interest will be charged on 2nd installment.

tba                              Certified Letter postmark-NO longer except personal checks, additional $10.00 fee added.

tba                              Publication of Delinquent Taxes

10/24/2022                   Annual Tax Sale of Delinquent Taxes