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.
Monroe County, Michigan, has about 156,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Monroe County is held at the county jail, run by the Monroe 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: Monroe County public records, Monroe County arrest records, Monroe County warrants, Monroe County police reports, Monroe County property records, Michigan arrest records and Michigan inmate search.
Finding Someone in Custody in Monroe County
A person kept in custody after an arrest in Monroe County is held at the county jail, run by the Monroe County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the custody page of the Monroe County Sheriff's Office at co.monroe.mi.us/891/Inmate-Lookup (page title: Inmate Lookup | Monroe County, MI), phone 800-770-7657, which answered when SearchSystems opened it on September 23, 2026.
That page is the place to look for someone booked recently. A person cited and released at the scene, or held only a few hours by a city department, will not be on it.
The Monroe County Jail by the Numbers
On an average day in 2023 the jail held about 250 people, down from about 340 in 2019. Its rated capacity in 2023 was 363 beds, and it ran at 68 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Monroe County has about 156,000 residents (2024 Census Bureau estimate), so the jail holds about 16 people for every 10,000 residents.
Who Books People Into the Monroe County Jail
The Monroe County Sheriff's Office and the agencies that report for Monroe, Dundee, Carleton, South Rockwood and Luna Pier make the arrests that end in a booking in Monroe County.
The FBI's agency list also places one more agency in Monroe County: the Monroe County State Police (state police).
The Milan Police Department is listed by the FBI across two counties including Monroe County, so its arrests are not broken out for Monroe County here.
The largest arrest counts reported to the FBI were the Monroe County Sheriff's Office's 1,204 for 2025, Erie Township's 1,159 for 2025 and Luna Pier's 1,159 for 2025.
Together, the five agencies in Monroe County with all twelve months of 2025 on file reported 5,165 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 Monroe 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 Michigan Department of Corrections lists its inmates at mdocweb.state.mi.us/otis2.
Frequently Asked Questions
How do I find an inmate in Monroe County?
Look on the custody page of the Monroe County Sheriff's Office at co.monroe.mi.us/891/Inmate-Lookup, or call 800-770-7657. It covers people booked into the county jail.
How many people are in the Monroe County jail?
About 250 on an average day in 2023, the latest year in the Vera Institute's jail data, against a rated capacity of 363 beds.
What is the phone number for the Monroe County jail?
800-770-7657, the number on the page of the Monroe County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Monroe County go?
To a facility of the Michigan Department of Corrections; its inmate locator is at mdocweb.state.mi.us/otis2.
Is this the official Monroe 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.