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 on September 23, 2026.
Boone County, Illinois, has about 53,000 residents (2024 Census Bureau estimate). The title to a parcel in Boone 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: Boone County public records, Boone County arrest records, Boone County warrants, Boone County criminal records, Boone County court records, Illinois arrest records and Illinois inmate search.
Deeds, Mortgages and Liens in Boone County
Deeds, mortgages, liens and easements that affect title to land in Boone County are recorded by the County Recorder, which indexes them by name and sells copies.
SearchSystems opened and checked the County Recorder's page at boonecountyil.gov/government/departments/clerk___recorder/recording..., phone 866-652-0111, which answered when SearchSystems opened it on September 23, 2026.
Assessed Values and the Tax Roll in Boone County
The Supervisor of Assessments sets the value each parcel in Boone County is taxed on and 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 boonecountyil.gov/how_do_i/find_learn_about/property_information.php, which answered when SearchSystems opened it on September 23, 2026.
More Official Property and Land Records Pages for Boone County
The SearchSystems directory, online since 1997, lists the official pages for Boone County and Illinois. These property pages from its Boone County listing were opened again on October 2, 2026 and each one still answers:
- Boone County Property Tax Inquiry (booneil.devnetwedge.com)
- Geographic Information Systems & Maps (boonecountyil.gov)
Permits and City Records in the Cities of Boone County
Building permits, zoning and code cases inside a city are the city's own records. The cities in Boone County with a SearchSystems guide to their offices, with the city page SearchSystems verified:
- Belvidere: the city hall page SearchSystems verified is at belvidereil.gov/contact-us, phone (815) 544-2612 (verified September 25, 2026).
Evictions and Court Cases About Land in Boone County
Court cases about land from Boone County, evictions among them, are filed in the Circuit Court of Boone County.
The court records page SearchSystems verified for the county is at boonecircuitclerk.us/page/11/court-records, phone 815-544-0371.
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. The county records request page SearchSystems verified is at boonecountyil.nextrequest.com (page title: Boone County, IL Open Public RecordsNextRequest | Modern FOIA & Public Records Request Software).
Frequently Asked Questions
Who records deeds in Boone County?
The County Recorder, at boonecountyil.gov, phone 866-652-0111. Deeds, mortgages and liens on land in Boone County are filed there, and the Supervisor of Assessments (boonecountyil.gov) has the assessment records.
Who sets the assessed value of a property in Boone County?
The Supervisor of Assessments, whose page SearchSystems verified is at boonecountyil.gov.
Where are evictions from Boone County filed?
In the Circuit Court of Boone 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 Boone 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.