The Piatt County Geographical Information System (GIS) offers enhanced search capabilities including lookup by common post office address, PIN, and street intersection.
Click here to go to the Piatt
County GIS site.
Advanced features of the Piatt County GIS are only avaiable by subscription. The annual fee for these additional features is $40.00. To subscribe, please fill out the Interactive Map Subscription Agreement form and follow the instructions at the bottom. Following approval of your contract, you will be provided with access information.
The Office of the Supervisor of Assessments was created by state law to provide statistical assessment performance data to the Illinois Department of Revenue. It is the responsibility of the county's township assessors to assess the properties in their jurisdictions. Sales information is compiled from the transfer declarations recorded in the County Clerk's office. Property record cards are available for each property in the County. Aerial maps are maintained in the office. There are approximately 11,306 parcels in Piatt County at this time. The office administers the following exemptions:
Click on a highlighted exemption for a printable form. Pdf Reader required PLEASE NOTE: All forms, including "Name/Address Change", must be mailed or delivered to our office in person. Faxes will not be accepted.
General Homestead Exemption-$6,000 exemption available for residential property that is occupied by the owners as their principal residence.
Homestead Improvement Exemption-For those that qualify exemption up to $75,000 assessed value of the improvement. Can continue for up to 4 years.