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 September 30, 2026.
Gratiot County, Michigan, has about 41,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Gratiot County is held at the county jail, run by the Gratiot 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: Gratiot County public records, Gratiot County arrest records, Gratiot County warrants, Gratiot County criminal records, Gratiot County court records, Michigan arrest records and Michigan inmate search.
Finding Someone in Custody in Gratiot County
A person kept in custody after an arrest in Gratiot County is held at the county jail, run by the Gratiot County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the jail page of the Gratiot County Sheriff's Office at gratiotmi.com/344/Sheriffs-Office (page title: Sheriff’s Office | Gratiot County, MI), phone 989-875-5214, 226 E Center Street Ithaca, MI 48847, Monday through Friday 8 a.m. to 3 p.m., 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 989-875-5214.
The Gratiot County Jail by the Numbers
On an average day in 2020 the jail held about 35 people, down from about 60 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 72 beds, and it ran at 83 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Gratiot County has about 41,000 residents (2024 Census Bureau estimate), so the jail holds about 8 people for every 10,000 residents.
Who Books People Into the Gratiot County Jail
The Gratiot County Sheriff's Office and the agencies that report for Alma and St. Louis make the arrests that end in a booking in Gratiot County.
The FBI's agency list also places one more agency in Gratiot County: the Gratiot County State Police (state police).
The largest arrest counts reported to the FBI were Alma's 351 for 2025, the Gratiot County Sheriff's Office's 254 for 2025 and St. Louis's 90 for 2025.
Together, the three agencies in Gratiot County with all twelve months of 2025 on file reported 695 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 Gratiot 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 Gratiot County?
Ask the Gratiot County Sheriff's Office at 989-875-5214; its jail page SearchSystems verified is at gratiotmi.com/344/Sheriffs-Office.
How many people are in the Gratiot County jail?
About 35 on an average day in 2020, the latest year in the Vera Institute's jail data, against a rated capacity of 72 beds.
What is the phone number for the Gratiot County jail?
989-875-5214, the number on the page of the Gratiot County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Gratiot 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 Gratiot 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.