Mercer County Detention Facility Inmate Lookup

Mercer County Detention Facility Overview

Mercer County Detention Facility is operated by the Mercer County Sheriff's Office at the sheriff and jail complex on State Route 29 in Celina. The same official materials also refer to the jail as the detention center or corrections division, but the custody function is the county adult detention operation. It receives local arrests, adult pretrial detainees, sentenced misdemeanor inmates, court holds, transport holds, and some inmates housed for other agencies.

The jail is a full-service local facility with 24-hour monitoring, intake observation, housing-unit placement, video visitation, commissary activity, medication distribution, meals, court preparation, releases, and transports. The sheriff's official corrections materials say those daily duties are handled with a minimum of three officers per shift. Sheriff Doug Timmerman's office also maintains the public jail roster, warrant search, visitation pages, public records request form, annual reports, and the Mercer County Sheriff's Ohio mobile app.

The sheriff's corrections page shown in the manifest is the official page most directly tied to this facility's operations. It can be opened at the Mercer County corrections page.

That page is useful because it connects the jail contact block with inmate search, visitation, corrections employees, and other sheriff resources that affect people held at the Mercer County Detention Facility.

Mercer County Detention Facility Capacity and Population

The best sourced capacity figure in the research is the 2017 NEOMED Mercer County Sequential Intercept Mapping report, which listed the Mercer County Jail at 104 rated beds. The same report described an average population of more than 80, 15 beds for other counties' inmates, and an estimated 74 percent pretrial population. The live sheriff roster inspected on June 24, 2026 showed 57 current inmates in jail.

The sheriff's 2022 annual report provides a separate trend view: average daily inmate count ranged from 42 to 67 by month, inmates housed for other agencies ranged from 19 to 32, and monthly new bookings ranged from 62 to 108. Those figures show why a roster count should be treated as a point-in-time snapshot, not as the jail's normal annual population.

How to Look Up an Inmate at Mercer County Detention Facility

Use the official Mercer County Sheriff's Office Jail Inmate Search for current and past county jail inmates. The roster is the right tool for people booked into Mercer County Detention Facility after a local arrest, but it is not the right tool for sentenced Ohio prison inmates, federal prisoners, or immigration detainees.

1. Open the sheriff inmate search and choose the status filter: Active, Inactive, or Active - Last 24 Hours.
2. Search by last name, first name, booking-date range, or a combination of those fields.
3. Review the result row for photo, full name, age, and the View Details link.
4. Open the profile to check booking agency, booking date, current charges, court, case number, bail amount, bond type, and release notification options.

If the arrest is very recent, the profile may not appear until booking is complete and entered into the jail register. Call Corrections at 419-586-5753 when the roster is down, the search result is unclear, or release and bond information needs to be confirmed before travel. If the person has been sentenced to Ohio prison, use the ODRC Offender Search. Federal and immigration custody require BOP, U.S. Marshals, or ICE lookup channels rather than the county roster.

Mercer County Detention Facility Address and Contact

The detention facility and sheriff's office are at the same State Route 29 complex in Celina. The courthouse and Clerk/Common Pleas Court are downtown at 101 North Main Street, so visitors should not assume the jail and court are the same stop. For jail questions, use the corrections number. For public records requests, the sheriff's public request contact is the same State Route 29 address with the civil/public records phone.

Visiting Someone at Mercer County Detention Facility

Public nonprofessional visits are video visits scheduled by the visitor through CIDNET. Appointments may be scheduled up to seven days in advance and no less than 24 hours before the visit. The sheriff's rules say visits are monitored and may be recorded. On-site visitors should arrive about ten minutes early, sign the visitation register, show photo ID, and bring only permitted items into the lobby.

The official visiting-hours page shown in the manifest can be checked at Mercer County visiting hours.

The schedule image reinforces the split between free on-site lobby video visits and paid remote video visits, which is important because both use appointment rules and twenty-minute sessions.

Mail, Phone, and Money at Mercer County Detention Facility

Mercer sources confirm commissary activity and inmate-profile deposit links, but they do not publish a complete mail-rules page or phone-provider table in the material inspected. The safest approach is to verify mail format, restrictions, and any current phone procedures with Corrections before sending anything. Use the inmate's full name and booking details if jail staff provide a required format.

Booking and Intake at Mercer County Detention Facility

Mercer booking normally starts when an arresting agency transports the person to the detention facility. The sheriff's official corrections material says most bookings take 45 to 60 minutes and are normally handled by two officers. The process includes booking and medical questions, property inventory, jail register entry, mug shot, fingerprints, showering, jail property issue, and placement in the intake area for observation before housing-unit placement.

The NEOMED report adds that potential inmates are pre-screened before acceptance and that intake includes medical screening with mental-health questions. After booking, staff handle medication, meals, visits, attorney and medical escorts, recreation, programs, clothing and bedding changes, cell inspections, commissary, court preparation, release, and transports. Release processing is described as normally taking around 20 minutes, but bond terms and holds can change after a court action.

About Mercer County Detention Facility

The current jail is tied to a detailed local building history. Mercer County voters approved a 0.5 percent sales tax in November 2007 for a new sheriff's office and jail, and construction at 4835 State Route 29 was completed in November 2009. Administration and dispatch moved in on January 4, 2010, and prisoners and corrections staff moved on February 28, 2010. Earlier jail history includes the 1939 jail at 125 W. Livingston Street, later renovations, and the Jail Annex.

The sheriff history page shown in the manifest is available at the official Mercer jail history page.

That history helps explain why the present facility functions as both the sheriff's office and the county's main jail, rather than a courthouse lockup or separate municipal jail.

The official sources also show recent accountability and service details. Sheriff Doug Timmerman took office on January 6, 2025, and the office has sought OCLEAP accredited status. The sheriff mobile app is advertised as a public-safety communication tool with news, notifications, tips, and access to the same general tool family as the inmate list and active warrants. It is not for emergencies; call 911 in an emergency.