Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. Every office link was opened and checked against the office's own site between September 23, 2026 and October 4, 2026.
Clay County, Illinois, has about 13,000 residents (2024 Census Bureau estimate). The title to a parcel in Clay County is in the deed records of the County Recorder and its taxable value is set by the Supervisor of Assessments; what is built on it is a matter for the city or the county. This guide says who keeps each record and where the page for each office is.
This guide covers deeds, assessed values, evictions and court cases, records requests and common questions.
Related guides: Clay County public records, Clay County arrest records, Clay County warrants, Clay County inmate search, Clay County criminal records, Illinois arrest records and Illinois inmate search.
Deeds, Mortgages and Liens in Clay County
Who owns a parcel in Clay County and what it sold for are in the deed records of the County Recorder, with every lien or mortgage against the land.
SearchSystems opened and checked the County Recorder's page at claycounty.illinois.gov/county-clerk/recorder (page title: Recorder | Clay County Government), phone (618) 665-3626, 111 E. Chestnut St. P.O. Box 160 Louisville, IL 62858, Monday - Friday from 8:00 a.m. to 4:00 p.m., which answered when SearchSystems opened it on September 30, 2026.
Assessed Values and the Tax Roll in Clay County
What a parcel in Clay County is taxed on is the business of the Supervisor of Assessments, which also keeps the parcel maps. Illinois assesses property at a third of market value; Cook County reassesses one third of the county each year and the rest of the state runs on four-year cycles.
SearchSystems opened and checked the Supervisor of Assessments' page at claycounty.illinois.gov/supervisor-of-assessments (page title: Supervisor of Assessments), phone 618-665-3370, 111 E. Chestnut St. P.O. Box 178 Louisville, IL 62858, which answered when SearchSystems opened it on September 30, 2026.
Evictions and Court Cases About Land in Clay County
An eviction, a foreclosure, a lien dispute or a quiet title suit is a court case in the Circuit Court of Clay County, and the file is public unless sealed.
The court records page SearchSystems verified for the county is at illinoiscourts.gov/courts-directory/73/Clay-County-Courthouse/court, phone (618) 665-3525. That page belongs to a lower court, not to the Circuit Court of Clay County.
Asking a County Office for a Record
Under the Illinois Freedom of Information Act a county office must answer a request within 5 business days, with one 5-day extension, and it may charge copying only after the first 50 pages.
Frequently Asked Questions
Who records deeds in Clay County?
The County Recorder, at claycounty.illinois.gov/county-clerk/recorder, phone (618) 665-3626. Deeds, mortgages and liens on land in Clay County are filed there, and the Supervisor of Assessments (claycounty.illinois.gov) has the assessment records.
Who sets the assessed value of a property in Clay County?
The Supervisor of Assessments, whose page SearchSystems verified is at claycounty.illinois.gov.
Where are evictions from Clay County filed?
In the Circuit Court of Clay County. The file is public unless the court seals it.
How is property assessed in Illinois?
Illinois assesses property at a third of market value; Cook County reassesses one third of the county each year and the rest of the state runs on four-year cycles.
Is this the official Clay County website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official county, court and state offices described above and does not hold records, charge for them or take requests.