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.
Jacksonville, Illinois, in Morgan County, has about 18,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Jacksonville is held at the county jail, run by the Morgan 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: Jacksonville public records, Morgan County inmate search, Jacksonville arrest records, Jacksonville warrants, Jacksonville criminal records, Jacksonville court records, Illinois arrest records and Illinois inmate search.
Finding Someone in Custody in Jacksonville
The county jail, run by the Morgan County Sheriff's Office, holds everyone kept in custody after an arrest in Jacksonville, from every agency.
SearchSystems opened and checked the jail page of the Morgan County Sheriff's Office at ilsheriff.org/county/morgan (page title: Morgan County | Illinois Sheriffs' Association), phone (217) 753-2372, 300 West Court, Jacksonville, IL 62650, a site that blocks automated checks (HTTP 403), so open it in a browser.
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) 753-2372.
The Morgan County Jail by the Numbers
On an average day in 2019 the jail held about 55 people. Its rated capacity in 2019 was 55 beds, and it ran at 100 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Morgan County has about 33,000 residents (2024 Census Bureau estimate), so the jail holds about 17 people for every 10,000 residents.
Who Books People Into the Morgan County Jail
The Morgan County Sheriff's Office and the agency that reports for Jacksonville (filed by the FBI as Jacksonville Police Department) make the arrests that end in a booking in and around Jacksonville.
The largest arrest counts reported to the FBI were Meredosia's 1,152 for 2025, Murrayville's 1,152 for 2025 and Jacksonville's 500 for 2025.
Together, the five agencies in Morgan County with all twelve months of 2025 on file reported 2,910 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 Jacksonville 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 Jacksonville?
Ask the Morgan County Sheriff's Office at (217) 753-2372; its jail page SearchSystems verified is at ilsheriff.org/county/morgan.
How many people are in the Morgan County jail?
About 55 on an average day in 2019, the latest year in the Vera Institute's jail data, against a rated capacity of 55 beds.
What is the phone number for the Morgan County jail?
(217) 753-2372, the number on the page of the Morgan County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Morgan 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 Jacksonville website?
No. SearchSystems.net is an independent public records guide, online since 1997. It links to the official city, county, court and state offices described above and does not hold records, charge for them or take requests.