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. Every office link was opened and checked against the office's own site between September 23, 2026 and September 28, 2026.
Cass County, Illinois, has about 13,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Cass County is held at the county jail, run by the Cass 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, who books people, state prison and common questions.
Related guides: Cass County public records, Cass County arrest records, Cass County warrants, Cass County criminal records, Cass County court records, Illinois arrest records and Illinois inmate search.
Finding Someone in Custody in Cass County
The county jail, run by the Cass County Sheriff's Office, holds everyone kept in custody after an arrest in Cass County, from every agency.
SearchSystems opened and checked the jail page of the Cass County Sheriff's Office at co.cass.il.us/elected-officials/sheriff (page title: Sheriff | Cass County Illinois), phone (217) 452-7718, 101 N. Front St. Virginia, IL 62691, which answered when SearchSystems opened it on September 28, 2026.
That page is the office's jail information page rather than a roster, so a search for a particular person goes through the office at (217) 452-7718.
Who Books People Into the Cass County Jail
The Cass County Sheriff's Office and the agencies that report for Beardstown, Virginia, Ashland and Chandlerville make the arrests that end in a booking in Cass County.
The largest arrest counts reported to the FBI were Virginia's 1,152 for 2025, the Cass County Sheriff's Office's 0 for 2025 and Ashland's 0 for 2025.
Together, the four agencies in Cass County with all twelve months of 2025 on file reported 1,152 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 Cass 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 Cass County?
Ask the Cass County Sheriff's Office at (217) 452-7718; its jail page SearchSystems verified is at co.cass.il.us/elected-officials/sheriff.
What is the phone number for the Cass County jail?
(217) 452-7718, the number on the page of the Cass County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Cass 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 Cass 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.