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.
Putnam County, Illinois, has about 5,600 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Putnam County is held at the county jail, run by the Putnam 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: Putnam County public records, Putnam County arrest records, Putnam County warrants, Putnam County criminal records, Putnam County court records, Illinois arrest records and Illinois inmate search.
Finding Someone in Custody in Putnam County
The county jail, run by the Putnam County Sheriff's Office, holds everyone kept in custody after an arrest in Putnam County, from every agency.
SearchSystems opened and checked the jail page of the Putnam County Sheriff's Office at putnamil.gov/departments/sherriffs_office/county_jail.php (page title: Putnam County Jail), phone 815-925-7015, 120 N. 4th St Hennepin, IL 61327, Wednesday from 7pm-8pm, which answered when SearchSystems opened it on October 4, 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 815-925-7015.
The Putnam County Jail by the Numbers
On an average day in 2019 the jail held about 1 people. Its rated capacity in 2019 was 5 beds, and it ran at 20 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Putnam County has about 5,600 residents (2024 Census Bureau estimate), so the jail holds about 2 people for every 10,000 residents.
Who Books People Into the Putnam County Jail
The Putnam County Sheriff's Office and the agency that reports for Granville make the arrests that end in a booking in Putnam County.
The largest arrest counts reported to the FBI were the Putnam County Sheriff's Office's 21 for 2025 and Granville's 5 for 2024.
Together, the two agencies in Putnam County with all twelve months of 2024 on file reported 35 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 Putnam 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 Putnam County?
Ask the Putnam County Sheriff's Office at 815-925-7015; its jail page SearchSystems verified is at putnamil.gov.
How many people are in the Putnam County jail?
About 1 on an average day in 2019, the latest year in the Vera Institute's jail data, against a rated capacity of 5 beds.
What is the phone number for the Putnam County jail?
815-925-7015, the number on the page of the Putnam County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Putnam 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 Putnam 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.