Warren County Supervisor of Assessments

100 W. Broadway, 2nd Floor 309-734-8561
Monmouth, IL 61462-1761 kelliott@warrencountyil.com
Monday – Friday 8:00 a.m. to 4:30 p.m. except holidays. www.warrencountyil.com


Kathleen Elliott
  Supervisor of Assessments

   DeAnna McCurdy - dmccurdy@warrencountyil.com 

   Autumn Chapin - warrencountyassessor2@outlook.com


Illinois Department of Revenue (http://www.tax.illinois.gov) - online access to frequently asked questions and forms for taxpayers and tax professionals.

Assessment Data and current property ownership information is available in person or by phone.  The information may now also been seen at https://il1374.cichosting.com/atasportal/ 

When you are doing inquires the Tax Year is the same as the Assessment Year.  For example, if you are wanting to see what the assessment or exemptions were for 2017 payable in 2018 you will need to inquire on Tax Year 2017.  This web portal is general information only and does not include property record cards or parcel maps.


Change of address requests must be made in writing and must include a written signature.  Click here to download a change of address request form (pdf),  Completed forms may be submitted to this office by either mail or e-mail.

Property record cards and parcel maps are not able to be e-mailed or faxed but photocopies will be mailed along with an invoice whenever possible if you cannot obtain copies in person.

Contact our office if you have questions regarding qualifications and application proceedures for homestead exemptions in our County.