Knox County, Illinois

Where to obtain records

Knox County Treasurer / Collector; County Clerk for sold-tax redemption

How to find the information

The current Tax Sale Info page says Knox County will acquire delinquent real-estate taxes as trustee beginning with the 2025 payable 2026 sale. It says delinquent taxes are published in local newspapers and that the County Clerk handles tax-sale certificates. Ask the Treasurer’s real-estate desk for an existing unpaid ledger or the specified publication.

To obtain existing unpaid-tax records, provide the parcel/PIN, tax year, payable year and desired as-of date. Specify whether you need current collection history, the annual delinquency publication, tax-sale/certificate history or a dated redemption estimate. Ask whether subsequent taxes, interest, penalties, costs and recent payments are included. Confirm inspection, electronic-copy, research, certification and extract fees with the office. Assessor valuations, ordinary property sales, trustee-auction catalogs and payment receipts do not by themselves certify every unpaid obligation.

What to ask for

“I am looking for publicly available delinquent real-property tax records for Knox County for [tax year]. Which office maintains these records? Is there an online search or downloadable list? If not, how can I request a copy, and what fees apply?”

Have the property address, parcel number, owner name, and tax year ready when searching for a particular property.

County-specific notes

Use the current county real-estate contact rather than an older general directory number. The older Delinquent Tax Procedures page describes notice stages; its general sale wording does not override the 2026 trustee notice. Reviewed October 28, 2026. County notices can change, and older calendars remain on some sites. No taxpayer query, CAPTCHA completion, account registration, record-request submission, bidder enrollment, upload or payment was performed. No owner-list attachments or taxpayer rows are included.