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.
Marion, Indiana, in Grant County, has about 28,000 residents (2024 Census Bureau estimate). A person kept in custody after an arrest in Marion is held at the county jail, run by the Grant 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: Marion public records, Grant County inmate search, Marion arrest records, Marion warrants, Marion criminal records, Marion court records, Indiana arrest records and Indiana inmate search.
Finding Someone in Custody in Marion
The county jail, run by the Grant County Sheriff's Office, holds everyone kept in custody after an arrest in Marion, from every agency.
SearchSystems opened and checked the custody page of the Grant County Sheriff's Office at in.gov/counties/grant/sheriff/divisions/jail-division/jail-current-... (page title: Grant County: Grant County Sheriff's Office: Jail Current Inmates), phone (765) 668-8168, 214 E 4th St Marion, IN 46952, which answered when SearchSystems opened it on September 30, 2026.
Someone booked recently shows on that page; someone cited and released at the scene, or held a few hours at a city station, does not.
The Grant County Jail by the Numbers
On an average day in 2024 the jail held about 330 people, up from about 270 in 2019. Its rated capacity in 2023, the last year with a capacity figure, was 274 beds, and it ran at 124 percent of it that year. The figures are from the Vera Institute of Justice's Incarceration Trends data.
Grant County has about 66,000 residents (2024 Census Bureau estimate), so the jail holds about 50 people for every 10,000 residents.
Who Books People Into the Grant County Jail
The Grant County Sheriff's Office and the agency that reports for Marion (filed by the FBI as Marion Police Department) make the arrests that end in a booking in and around Marion.
The largest arrest counts reported to the FBI were Marion's 621 for 2025, the Grant County Sheriff's Office's 548 for 2025 and Gas City's 19 for 2025.
Together, the three agencies in Grant County with all twelve months of 2025 on file reported 1,188 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 Marion 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 Grant County serves the sentence in a facility of the Indiana Department of Correction, whose inmate locator is at offenderlocator.idoc.in.gov/idoc-ofs-1.0.2/ofs.
Frequently Asked Questions
How do I find an inmate in Marion?
Look on the custody page of the Grant County Sheriff's Office at in.gov, or call (765) 668-8168. It covers people booked into the county jail.
How many people are in the Grant County jail?
About 330 on an average day in 2024, the latest year in the Vera Institute's jail data, against a rated capacity of 274 beds.
What is the phone number for the Grant County jail?
(765) 668-8168, the number on the page of the Grant County Sheriff's Office SearchSystems verified.
Where do people sentenced to prison in Grant County go?
To a facility of the Indiana Department of Correction; its inmate locator is at offenderlocator.idoc.in.gov.
Is this the official Marion 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.