Trenton City Jail

Search for an Inmate in Mercer County

Trenton City Jail

The Trenton City Jail is CLOSED.  People arrested are housed in the Richland County Jail in Wahpeton, North Dakota. You can call them 24 hours a day for inmate information at 609-989-3940.

This facility processes offenders arrested for misdemeanors and felonies within the county. They are brought here for booking and processing. Depending on their charges, they may remain incarcerated until they are either bonded out, released on their own recognizance, or ordered to stay in custody until their trial is resolved.

You can use the inmate search tool to view the jail's roster and see who is currently in custody.

Inmates sentenced to less than one year will serve their time in this facility. Those with sentences longer than one year will be transferred to either the New Jersey State Prison System or the Federal Bureau of Prisons.

On this page, you'll find information on inmate services, including the visitation schedule, funding an inmate's account, sending mail, receiving phone calls, voicemail, emailing and texting, tablet rentals, bail bond instructions, and commissary purchases.

It's useful to note and save the inmate's jail ID or booking number, which is often needed for sending mail or other communications. If you can't find it online, you can call Trenton City Jail at 609-989-3940 for assistance.

Phone: 609-989-3940

Physical Address:
225 North Clinton Avenue
Trenton, NJ 8609

Other Jails and Prisons

How Do You Find Someone in the Trenton City Jail?

To search for an inmate in the Trenton City Jail, review their criminal charges, the amount of their bond, when they can get visits, or even view their mugshot, go to the Official Jail Inmate Roster, or call the jail at 609-989-3940 for the information you are looking for. You can also look up an offender's Criminal Court Case for Mercer County or any other court in New Jersey.

Trenton City Jail Inmate Search

The Trenton City Jail maintains an average of 34 offenders in custody on any given day. The Trenton City Jail has a monthly turnover of 40% of their inmate population, another 30% turnover every 90 days, another 20% every six months, and approximately 10% stay incarcerated between six and twelve months. Every year Mercer County law enforcement agencies arrest and detain approximately 19,600 offenders.

The following charts of Mercer County inmate population demographics are updated daily. The information shown is for today. For research purposes we have broken down the inmates by sex, age, ethnicity, and criminal charges.

The information is compiled from the Mercer County Corrections Department, the state of New Jersey Department of Corrections, as well as the United States Department of Justice and Census Bureau records. It represents every person in custody in Mercer County.

For complete information on how to get directions, bond, visit, mail, send and receive email and texts, receive phone calls, and send money or commissary to an inmate, find arrest information for Mercer County and other counties surrounding this one, scroll down this page. We have a section for each.

We also provide photos of the jail that we have collected over the years.

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About the Trenton City Jail
This minimum security facility is located inside the Trenton Police Station. It is operated by the local police and holds their detainees until they are booked, charged, and assessed to determine if they will remain at the facility or be transferred directly to the county jail. With space for under 20 inmates, it does not function as a long term detention center and most inmates are waiting to determine what their bail, waiting for that bail to be paid, or are waiting to be transferred to another facility. Inmates do not remain at this facility for over a year, and most will not stay longer than a few days. Only adults are held here, with juveniles going to the facility that is intended for youth offenders, and male and female inmates remain separated throughout their experience. Phone calls can be made by inmates during their daytime hours of 7:30am and 7pm. Each call recipient must be listed on their approved call list and they must be available to accept the call. Incoming phone calls cannot be received by inmates, and they are not permitted to contact inmates at other facilities or those who are involved in their current case. Visiting lists are also created and all visitors must be preapproved by the staff before any visit may be scheduled. All visits will occur during the day, not beginning before 9am and not extending past 6pm, with no children under the age of 16 being permitted to visit at this specific facility.
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Recent Bookings & Arrests

How does the booking process work at Trenton City Jail?

Once someone is arrested, they are taken to Trenton City Jail for booking. This process involves identifying the individual, determining charges, and deciding if they will be released on their own recognizance, released on bail, or held in custody until their court date.

It’s important for the arrestee to stay silent, as anything they say can be used against them. The best advice is to avoid answering any questions about the arrest until legal counsel is present.

The booking process at Trenton City Jail typically includes the following steps:

  • Verifying identity.
  • Taking a mugshot.
  • Answering questions regarding medical, mental health, and substance use history.
  • DNA collection, if required.
  • Conducting a thorough search.
  • Confiscating personal belongings.
  • Providing a free phone call.

Depending on circumstances, booking can take anywhere from one hour to up to 48 hours, especially during busy periods or if the individual is uncooperative. For questions about paying an arrestee’s bond or bail amount, contact the facility at 609-989-3940.

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Directions / Map to the Trenton City Jail
Inmate Bail and Bonding

What is the process to pay bail for someone detained in Mercer County?

After an individual is apprehended and taken to Trenton City Jail in Trenton for booking, their release options vary based on the situation:

1. They might be released without bail, on the condition they appear in court on a scheduled date.
2. They may be detained until their court appearance.
3. They may be eligible for release after posting a bail or bond.  Call 609-989-3940 for the exact bail amount.

There are different ways to settle an individual's bail or bond.

  • Bail can be paid using cash, a money order, or a credit card.
  • A licensed bail bondsman in Mercer County can assist with payment.
  • Real estate located in the county can be used as bail collateral. 

For more information on the bail process in Mercer County, New Jersey, visit the Trenton City Jail Bail Information Page.

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Are there photos of the Trenton City Jail? What does it look like?
Other Jails in Mercer County

What are the other City and County Jails in Mercer County?

Mercer County County Jails
Mercer County City Jails
Mercer County Juvenile Facilities
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Other Jails Nearby

What are the other Jails in the Neighboring Counties surrounding Mercer County?

Mercer Monmouth Middlesex Somerset Hunterdon Burlington Bucks
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Search for an Inmate in Mercer County

This facility, known as "Trenton City Jail" is also known as Trenton City Jail, New Jersey, Mercer.

The Trenton City Jail serves the following cities and towns of Mercer County: East Windsor, Ewing, Hamilton, Hightstown, Hopewell, Hopewell Township, Lawrence, Pennington, Princeton, Robbinsville, Trenton and West Windsor.