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 on September 23, 2026.
Peoria County, Illinois, has about 180,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Peoria County is held at the county jail, run by the Peoria County Sheriff's Office, and the jail's record of each person held is a public record. This guide says where to look for someone in custody, what the jail holds and who books people into it.
This guide covers the search, the jail, who books people, state prison and common questions.
Related guides: Peoria County public records, Peoria County arrest records, Peoria County warrants, Peoria County police reports, Peoria County property records, Illinois arrest records and Illinois inmate search.
Finding Someone in Custody in Peoria County
The county jail, run by the Peoria County Sheriff's Office, holds everyone kept in custody after an arrest in Peoria County, from every agency.
SearchSystems opened and checked the jail page of the Peoria County Sheriff's Office at peoriacounty.gov/566/Corrections (page title: Corrections | Peoria County, IL), which answered when SearchSystems opened it on September 23, 2026.
That page is the office's jail information page rather than a roster.
The Peoria County Jail by the Numbers
On an average day in 2019 the jail held about 260 people. Its rated capacity in 2019 was 492 beds, and it ran at 53 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Peoria County has about 180,000 residents (2024 Census Bureau estimate), so the jail holds about 15 people for every 10,000 residents.
Who Books People Into the Peoria County Jail
The Peoria County Sheriff's Office and the agencies that report for Peoria, Chillicothe, Bartonville, Peoria Heights, Elmwood and Glasford make the arrests that end in a booking in Peoria County.
The FBI's agency list also places these agencies in Peoria County: the Peoria Park District (other agency); Bradley University (campus police).
The largest arrest counts reported to the FBI were Peoria's 5,446 for 2025, the Peoria County Sheriff's Office's 981 for 2025 and Peoria Heights's 533 for 2024.
Together, the four agencies in Peoria County with all twelve months of 2025 on file reported 6,962 arrests to the FBI that year. Those kept in custody were booked into the county jail; a person cited and released at the scene was not.
The counts, agency by agency and year by year, are in Peoria County arrest records.
From the Jail to State Prison
The jail holds people awaiting trial and people serving short sentences. A person sentenced to prison in Peoria County serves the sentence in a facility of the Illinois Department of Corrections, whose inmate locator is at idoc.illinois.gov/offender/inmatesearch.html.
Frequently Asked Questions
How do I find an inmate in Peoria County?
Ask the Peoria County Sheriff's Office; its jail page SearchSystems verified is at peoriacounty.gov/566/Corrections.
How many people are in the Peoria County jail?
About 260 on an average day in 2019, the latest year in the Vera Institute's jail data, against a rated capacity of 492 beds.
Where do people sentenced to prison in Peoria County go?
To a facility of the Illinois Department of Corrections; its inmate locator is at idoc.illinois.gov/offender/inmatesearch.html.
Is this the official Peoria 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.