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 2, 2026.
McDonough County, Illinois, has about 27,000 residents (2024 Census Bureau estimate). The title to a parcel in McDonough 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, directory links, city permits, evictions and court cases, records requests and common questions.
Related guides: McDonough County public records, McDonough County arrest records, McDonough County warrants, McDonough County inmate search, McDonough County criminal records, Illinois arrest records and Illinois inmate search.
Deeds, Mortgages and Liens in McDonough County
Who owns a parcel in McDonough 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 mcg.mcdonough.il.us/countyclerk.html (page title: McDonough County Clerk), phone 309-837-4889, which answered when SearchSystems opened it on September 23, 2026.
Assessed Values and the Tax Roll in McDonough County
What a parcel in McDonough 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 mcg.mcdonough.il.us/assessor.html (page title: Assessor's Office), phone (309)833-5305, which answered when SearchSystems opened it on September 23, 2026.
More Official Property and Land Records Pages for McDonough County
The SearchSystems directory, online since 1997, lists the official pages for McDonough County and Illinois. These property pages from its McDonough County listing were opened again on October 2, 2026 and each one still answers:
- McDonough County Property Tax Inquiry (mcdonoughil.devnetwedge.com)
Permits and City Records in the Cities of McDonough County
Building permits, zoning and code cases inside a city are the city's own records. The cities in McDonough County with a SearchSystems guide to their offices, with the city page SearchSystems verified:
- Macomb: the city hall page SearchSystems verified is at macomb.com/government, phone 309-837-0501 (verified September 25, 2026).
Evictions and Court Cases About Land in McDonough County
An eviction, a foreclosure, a lien dispute or a quiet title suit is a court case in the Circuit Court of McDonough County, and the file is public unless sealed.
The court records page SearchSystems verified for the county is at illinoiscourts.gov/courts-directory/33/McDonough-County-Courthouse/..., phone (309) 837-4891.
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 McDonough County?
The County Recorder, at mcg.mcdonough.il.us/countyclerk.html, phone 309-837-4889. Deeds, mortgages and liens on land in McDonough County are filed there, and the Supervisor of Assessments (mcg.mcdonough.il.us/assessor.html) has the assessment records.
Who sets the assessed value of a property in McDonough County?
The Supervisor of Assessments, whose page SearchSystems verified is at mcg.mcdonough.il.us/assessor.html.
Where are evictions from McDonough County filed?
In the Circuit Court of McDonough 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 McDonough 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.