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 4, 2026.
Hardin County, Illinois, has about 3,600 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Hardin County is held at the county jail, run by the Hardin 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: Hardin County public records, Hardin County arrest records, Hardin County warrants, Hardin County criminal records, Hardin County court records, Illinois arrest records and Illinois inmate search.
Finding Someone in Custody in Hardin County
A person kept in custody after an arrest in Hardin County is held at the county jail, run by the Hardin County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the custody page of the Hardin County Sheriff's Office at hardincountyil.org (page title: Hardin County, Illinois Jail Inmate Locator), a site that blocks automated checks (HTTP 403), so open it in a browser.
Someone booked recently shows on that page; someone cited and released at the scene, or held a few hours at a city station, does not.
The Hardin County Jail by the Numbers
On an average day in 2024 the jail held about 72 people, up from about 3 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 6 beds, and it ran at 50 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Hardin County has about 3,600 residents (2024 Census Bureau estimate), so the jail holds about 203 people for every 10,000 residents.
Who Books People Into the Hardin County Jail
The Hardin County Sheriff's Office makes the arrests that end in a booking in Hardin County.
The Hardin County Sheriff's Office reported 1,152 arrests to the FBI for 2025. 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 Hardin County arrest records.
From the Jail to State Prison
A sentence of more than a year is served in state prison, not the jail; the Illinois Department of Corrections lists its inmates at idoc.illinois.gov/offender/inmatesearch.html.
Frequently Asked Questions
How do I find an inmate in Hardin County?
Look on the custody page of the Hardin County Sheriff's Office at hardincountyil.org. It covers people booked into the county jail.
How many people are in the Hardin County jail?
About 72 on an average day in 2024, the latest year in the Vera Institute's jail data, against a rated capacity of 6 beds.
Where do people sentenced to prison in Hardin 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 Hardin 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.