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.
Union County, Illinois, has about 17,000 residents (2024 Census Bureau estimate). The title to a parcel in Union 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, directory links and common questions.
Related guides: Union County public records, Union County arrest records, Union County warrants, Union County criminal records, Union County court records, Illinois arrest records and Illinois inmate search.
Deeds, Mortgages and Liens in Union County
Who owns a parcel in Union County and what it sold for are in the deed records of the County Recorder, with every lien or mortgage against the land.
Assessed Values and the Tax Roll in Union County
What a parcel in Union 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 unionil.devnetwedge.com (page title: Union County Property Tax Inquiry), which answered when SearchSystems opened it on September 30, 2026.
Evictions and Court Cases About Land in Union County
Court cases about land from Union County, evictions among them, are filed in the Circuit Court of Union County.
The court records page SearchSystems verified for the county is at illinoiscourts.gov/courts-directory/146/Union-County-Courthouse/court, phone (618) 833-8114. That page belongs to a lower court, not to the Circuit Court of Union 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.
More Official Property and Land Records Pages for Union County
The SearchSystems directory, online since 1997, lists the official pages for Union County and Illinois. These recorded document pages from its Union County listing were opened again on October 2, 2026 and each one still answers:
- Recorder (ilsos.gov)
Frequently Asked Questions
Who records deeds in Union County?
The County Recorder.
Who sets the assessed value of a property in Union County?
The Supervisor of Assessments, whose page SearchSystems verified is at unionil.devnetwedge.com.
Where are evictions from Union County filed?
In the Circuit Court of Union 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 Union 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.