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.
Arenac County, Michigan, has about 15,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Arenac County is held at the county jail, run by the Arenac 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: Arenac County public records, Arenac County arrest records, Arenac County warrants, Arenac County police reports, Arenac County property records, Michigan arrest records and Michigan inmate search.
Finding Someone in Custody in Arenac County
A person kept in custody after an arrest in Arenac County is held at the county jail, run by the Arenac County Sheriff's Office, whichever agency made the arrest.
SearchSystems opened and checked the jail page of the Arenac County Sheriff's Office at arenaccountymi.gov/Sheriff/Sheriff (page title: Sheriff | Arenac County, Michigan), phone 989-846-3002, which answered when SearchSystems opened it on September 23, 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 989-846-3002.
The Arenac County Jail by the Numbers
On an average day in 2020 the jail held about 22 people, down from about 37 in 2019. Its rated capacity in 2019, the last year with a capacity figure, was 46 beds, and it ran at 80 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Arenac County has about 15,000 residents (2024 Census Bureau estimate), so the jail holds about 15 people for every 10,000 residents.
Who Books People Into the Arenac County Jail
The Arenac County Sheriff's Office and the agency that reports for Au Gres make the arrests that end in a booking in Arenac County.
The FBI's agency list also places one more agency in Arenac County: the Arenac County State Police (state police).
The largest arrest counts reported to the FBI were the Arenac County Sheriff's Office's 258 for 2025 and Au Gres's 1 for 2021.
The Arenac County Sheriff's Office reported 258 arrests to the FBI for 2025. 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 Arenac County arrest records.
From the Jail to State Prison
The jail holds people awaiting trial and people serving short sentences. A person sentenced to prison in Arenac County serves the sentence in a facility of the Michigan Department of Corrections, whose inmate locator is at mdocweb.state.mi.us/otis2.
Frequently Asked Questions
How do I find an inmate in Arenac County?
Ask the Arenac County Sheriff's Office at 989-846-3002; its jail page SearchSystems verified is at arenaccountymi.gov/Sheriff/Sheriff.
How many people are in the Arenac County jail?
About 22 on an average day in 2020, the latest year in the Vera Institute's jail data, against a rated capacity of 46 beds.
What is the phone number for the Arenac County jail?
989-846-3002, the number on the page of the Arenac County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Arenac 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 Arenac 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.