County Jail medium ✓ Verified August 2026

Mercer County OH Detention Facility

4835 State Route 29, Celina, OH 45822 ·Mercer County ·Capacity: 35 ·419-586-5753
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📍 Mercer County OH Detention Facility · Celina, OH

Mercer Co Jail in Celina, OH is a county detention facility operated by the Mercer County Sheriff's Office. Most people here are awaiting trial or sentencing - this is not a prison, and most stays are measured in days or months, not years. If someone you care about was just booked here, you have questions. Start with the one that matters most right now.

Is my family member at Mercer Co Jail?

If you are not certain they are there, the fastest way to confirm is the Mercer County inmate search or InmateAid's inmate locator, which searches across Ohio facilities by name.

Booking takes time - sometimes several hours after arrest. If the search comes back empty, wait a few hours and try again before assuming they have been transferred somewhere else. You can also pull their arrest record and booking details to confirm the charges and facility assignment. For the most direct answer, call Mercer Co Jail at 419-586-5753.

Official Inmate Search ↗ Current location, custody status and identifying number VINE — Victim Notification ↗ Automatic alerts on custody status changes
How do I get them out on bail?

Most people booked at Mercer Co Jail appear before a judge within 24 to 48 hours. At that first appearance the judge sets the bail amount - or denies bail - based on the charges, the person's history, and whether they are considered a flight risk.

If bail is set, your family member can be released by paying the full amount or by using a bail bondsman, who typically charges 10 percent of the total as a non-refundable fee. If bail is denied or the amount is unaffordable, they remain at Mercer Co Jail until the case resolves. InmateAid's bail and bond guide walks through every option including what to do if you cannot afford a bondsman.

What is happening to them right now?

Right after arrest, your family member goes through intake at Mercer Co Jail - identity verification, medical screening, property inventory, and classification. Classification places them in a housing unit based on the charges, prior record, and intake behavior. It is not a punishment. It is how the facility manages a population that ranges from people picked up on minor warrants to individuals facing serious charges.

For the first 24 to 48 hours, phone access and visitation are typically unavailable while booking completes. Once they are assigned to a housing unit, those channels open up. InmateAid's what happens in jail guide covers the full intake process step by step so you know what to expect.

How do I talk to them by phone?

Your family member calls you - you cannot call them. Calls from Mercer Co Jail go through InmateSales.com and all calls are recorded except attorney calls. Set up a InmateSales.com account before the first call so the connection goes through without delay.

Phone contact is more important than most people realize going into this. A regular call - even a short one - makes a measurable difference in how someone holds up inside. Do not let the setup friction stop you. Visit InmateAid's jail calls page for step-by-step account setup, current rate information, and tips for keeping funds available.

InmateSales.com ↗ Contracted phone carrier — account setup and rates
When can I visit and what are the rules?

Visitation hours at Mercer Co Jail are set by the facility and can change without much notice. Before making the trip, call 419-586-5753 to confirm current hours, any advance registration requirements, and what you are allowed to bring.

The most common mistake families make is showing up without confirming first - and that results in a wasted trip and a missed visit for your family member. General rules across most Ohio county jails: dress conservatively, avoid colors that resemble inmate uniforms, leave your phone in your car, and bring valid government-issued ID. Children may be permitted with specific requirements depending on the facility. InmateAid's visitation guide has a full checklist you can run through before you go.

Click the Schedule a Visit link to see your inmate

The Mercer County Detention Facility places great importance on visitation, recognizing it as an opportunity for inmates to maintain connections with family and friends while upholding safety and security inside the facility. Visitation is conducted through non-contact video monitors, following the Video Visitation policy and regulations set forth by the facility.

OFF-SITE - VIDEO VISITATION HOURS

  • DAILY 8:00 am - 10:50 am | 1:00 pm - 4:00 pm | 6:00 pm - 10:00 pm

ON-SITE - VIDEO VISITATION HOURS

  • Tuesday: 8:00am - 11:00am
  • Saturday: 1:00 pm - 4:00 pm
  • Sunday: 6:00 pm - 9:00 pm

All Video Visits are monitored and may be recorded for the safety and security of the Mercer County Detention Facility. Visitors are strictly prohibited from using any additional cameras, video devices, or recording devices to record or duplicate a video visit, whether on-site in the facility lobby or off-site. Violators of this policy may face termination of their Video Visitation privileges.

For visitors using the on-site lobby Video Visitation option, it is advised to arrive at least ten minutes before the scheduled visit. Late arrivals will not have their visitation appointment extended beyond the scheduled time.

  • All on-site visitors must sign in on the visitation register and present a valid photo ID. Visitors under the age of 18 must be accompanied by a parent or guardian, who must also provide the minor's birth certificate at the time of the visit. Unattended children are not allowed in the lobby.
  • Only essential items such as wallets, car keys, photo IDs, and birth certificates are permitted in the lobby. Items like purses, cell phones, smoking materials, and drinks are not allowed. All visitors are subject to search.
  • Disorderly persons may be denied Video Visitation, and visitors believed to be under the influence of alcohol or drugs will not be permitted to complete a video visit.
  • Proper attire is required for all visitors. Male visitors must wear shirts, pants, or shorts that are no shorter than mid-thigh and not provocative. Female visitors are prohibited from wearing see-through, low-cut, or revealing clothing, as well as tank tops, blouses, or dresses with thin straps or cutouts.
  • Visitors are not allowed to engage in disruptive behavior, including loud talking, excessive emotionalism, or argumentative conversations with inmates or others during Video Visitation. Nudity or sexual conduct is strictly prohibited and will result in the loss of Video Visitation privileges.
  • All inmates and visitors must follow the instructions of Mercer County Detention Facility staff. Failure to comply may result in the loss of Video Visitation privileges. Additionally, if a court imposes a no-contact order or temporary restraining order between an inmate and a potential visitor, Video Visitation will not be allowed.
⚑ Full visitation information, times & rules
How do I put money on their books?

Money on the books - also called the commissary or trust account - gives your family member access to hygiene items, snacks, phone time, and postage. It is one of the most practical things you can do and it has a direct effect on their daily comfort.

Mercer Co Jail accepts deposits through approved channels that typically include online deposit, phone deposit, or a kiosk at the facility. Use your family member's full legal name and booking number exactly as they appear in the jail's system - any error in the name or number will delay or reject the deposit. InmateAid's send money page lists the specific deposit methods accepted at Mercer Co Jail and walks through the process.

AccessCorrections ↗ Commissary and trust-account deposits
How do I send letters or photos?

A letter or a printed photo costs almost nothing to send and means far more than most people outside appreciate. Mercer Co Jail accepts incoming mail addressed to your family member at 4835 State Route 29. Put their full legal name and booking number on every piece of mail.

Standard rules at most Ohio county jails: plain white paper only, no staples, no glitter, no stickers, no colored ink. Photos should be standard print size with nothing written on the back. Mail that does not meet the facility's standards will be rejected - and the facility may not notify you that it was. Keep it simple.

InmateAid's send mail service lets you write and send directly from your phone or computer. We print on approved stock and mail it for you, so rejection for formatting is not a risk.

Books and magazines must come new, ordered directly from the publisher or through an online retailer - not shipped from your home address. Facilities require this to prevent contraband. Order through Amazon or directly from the publisher. Anything shipped from a personal address will be turned away.

Inmate Mailing Address
[Inmate Full Legal Name]
ID #: [Inmate Number]
Mercer County OH Detention Facility
4835 State Route 29
Celina, OH 45822
What else should I know about Ohio jails?

County jail procedures, visitation rules, phone rates, inmate search tools, bail processes, and what happens at release all vary by state. Ohio has its own rules and its own agencies, and what applies in one state does not always apply here.

InmateAid's Ohio prison resources hub covers all of it - written specifically for families navigating the Ohio system. Start there when you need answers that go beyond what this facility page covers.

Official Resources

County jail time is hard in a way that is different from anything else. The uncertainty - not knowing how long, not knowing what comes next - wears on everyone. What you can control is the connection. Calls, letters, visits, money on the books. Every one of those things tells your family member that someone out here is paying attention and is not going anywhere.

InmateAid was built for exactly this. Use us.

About this page — Information is compiled from official facility sources, state DOC guidelines, and verified family reports. Last updated August 2026.