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 September 25, 2026.
Winnebago County, Illinois, has about 284,000 residents (2024 Census Bureau estimate). The title to a parcel in Winnebago 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: Winnebago County public records, Winnebago County arrest records, Winnebago County warrants, Winnebago County inmate search, Winnebago County criminal records, Illinois arrest records and Illinois inmate search.
Deeds, Mortgages and Liens in Winnebago County
Deeds, mortgages, liens and easements that affect title to land in Winnebago 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 wincoil.gov/departments/recorders-office/records-search (page title: Records Search), phone 800-747-4600, which answered when SearchSystems opened it on September 23, 2026.
Assessed Values and the Tax Roll in Winnebago County
What a parcel in Winnebago 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 assessor.wincoil.gov/search (page title: Winnebago County Supervisor of Assessments Parcel Details Inquiry -- Search), which answered when SearchSystems opened it on September 23, 2026.
More Official Property and Land Records Pages for Winnebago County
The SearchSystems directory, online since 1997, lists the official pages for Winnebago County and Illinois. These property pages and recorded document pages from its Winnebago County listing were opened again on October 2, 2026 and each one still answers:
- Winnebago County Treasurer Parcel Tax Details Inquiry (taxes.wincoil.gov)
- Recorder's Office (wincoil.gov)
Permits and City Records in the Cities of Winnebago County
Building permits, zoning and code cases inside a city are the city's own records. The cities in Winnebago County with a SearchSystems guide to their offices, with the city page SearchSystems verified:
- Rockford: the city hall page SearchSystems verified is at rockfordil.gov/683/City-Departments, phone 779-348-7162 (verified September 25, 2026).
- Loves Park: the city hall page SearchSystems verified is at cityoflovespark.com/about-the-city/directions, phone (815) 654-5030 (verified September 25, 2026).
- Machesney Park: the city hall page SearchSystems verified is at machesneypark.org (verified September 25, 2026).
- South Beloit: the city hall page SearchSystems verified is at southbeloit.org/contact, phone 815-389-3023 (verified September 26, 2026).
- Rockton: the city hall page SearchSystems verified is at rocktonil.gov/?SEC=1B181063-4BF6-474E-B725-2CDDB8B35D17, phone (815) 624-7600 (verified September 26, 2026).
Evictions and Court Cases About Land in Winnebago County
An eviction, a foreclosure, a lien dispute or a quiet title suit is a court case in the Circuit Court of Winnebago County, and the file is public unless sealed.
The court records page SearchSystems verified for the county is at circuitclerk.wincoil.gov/access-court-records, phone 815-319-4500.
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 Winnebago County?
The County Recorder, at wincoil.gov, phone 800-747-4600. Deeds, mortgages and liens on land in Winnebago County are filed there, and the Supervisor of Assessments (assessor.wincoil.gov/search) has the assessment records.
Who sets the assessed value of a property in Winnebago County?
The Supervisor of Assessments, whose page SearchSystems verified is at assessor.wincoil.gov/search.
Where are evictions from Winnebago County filed?
In the Circuit Court of Winnebago 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 Winnebago 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.