Reviewed and updated October 9, 2026 by the SearchSystems.net editorial team. The arrest counts are the ones each agency reported to the FBI, as the FBI held them on October 8, 2026. The jail figures are from the Vera Institute of Justice's Incarceration Trends data. Every office link was opened and checked against the office's own site between September 23, 2026 and October 2, 2026.
Knox County, Illinois, has about 49,000 residents (2024 Census Bureau estimate). Every warrant for Knox County comes from a judge of the Circuit Court of Knox County, is served by whichever agency finds the person, and is recorded in the court file of the case it was issued in. This guide says who issues and serves warrants here, where a person arrested on one is held, how to check for one and how one is cleared.
This guide covers who issues warrants, who serves warrants, after a warrant arrest, checking for a warrant, clearing a warrant and common questions.
Related guides: Knox County public records, Knox County arrest records, Knox County inmate search, Knox County criminal records, Knox County court records, Illinois arrest records and Illinois inmate search.
Who Issues Warrants in Knox County
In Illinois an arrest warrant is signed by a judge. For Knox County that means the Circuit Court of Knox County, which hears every civil, criminal, family, probate, traffic and juvenile case.
When a defendant misses a court date the judge issues a bench warrant, and either kind of warrant lives in the court file of the case, kept by the Circuit Clerk.
The court records page SearchSystems verified for the county is at illinoiscourts.gov/courts-directory/25/Knox-County-Courthouse/court (page title: Knox County Circuit Court | State of Illinois Office of the Illinois Courts), phone (309) 345-3847, which answered when SearchSystems opened it on September 23, 2026.
Illinois has no single public index of every trial court case; each court's records are looked up through that court.
Who Serves Warrants in Knox County
The Knox County Sheriff's Office and the agencies that report for Galesburg, Knoxville, Yates City and Williamsfield serve warrants in Knox County.
The agency that serves a warrant from Knox County is whichever one finds the person; an Illinois warrant is valid across Illinois.
Together, the four agencies in Knox County with all twelve months of 2025 on file reported 3,116 arrests to the FBI that year; arrests on warrants are counted among them, not separately.
Each agency and what it reported is in Knox County arrest records.
Where a Person Arrested on a Warrant from Knox County Is Held
A person arrested on a warrant and kept in custody goes to the county jail, whichever agency made the arrest. The jail, run by the Knox County Sheriff's Office, held about 110 people on an average day in 2019 by the Vera Institute of Justice's count and has a jail page SearchSystems verified at knoxsheriff.org, phone 888-868-4631. The Knox County inmate search guide covers the jail in full.
A person arrested in Knox County on a warrant from another county is held at the same jail until that county takes custody.
How to Check for a Warrant in Knox County
The place to check for a warrant from Knox County is the court file of the case, through the Circuit Clerk at (309) 345-3847, since a warrant is recorded in the case it was issued in.
Not one of the Knox County pages SearchSystems verified (the sheriff's and the court's) is a list of open warrants, so a check means asking the court or the prosecutor about a case by name.
Clearing a Warrant from Knox County
A warrant is recalled by the court that issued it, so clearing one from Knox County starts with the Circuit Clerk at (309) 345-3847: the case goes back on the calendar and the judge recalls the warrant when the person appears.
Frequently Asked Questions
Can I check for a warrant online in Knox County?
Not from the Knox County pages SearchSystems verified; none of them is a warrant list. The court file is the record of a warrant: ask the Circuit Clerk at (309) 345-3847.
Who serves warrants in Knox County?
The Knox County Sheriff's Office, and the agency that reports for the city where the person is found; an Illinois warrant is valid anywhere in the state.
Where is a person arrested on a warrant in Knox County held?
At the county jail, run by the Knox County Sheriff's Office, if kept in custody.
How is a warrant from Knox County cleared?
By appearing before the court that issued it; the judge recalls the warrant in court. The case is put back on the calendar through the Circuit Clerk at (309) 345-3847.
Is this the official Knox 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.