Every detail on this page is checked by hand, not scraped. This unofficial directory helps friends and family of incarcerated individuals find critical information — inmate lists, locations, bail resources, visitation hours, rules, and text, phone, email, and mail services — for jails, detention centers, and prisons across the United States.
The Petroleum County Jail is CLOSED. Offenders in Petroleum County are housed in Fergus County.
Offenders arrested for misdemeanors and felonies in this county are brought to Fergus County for booking and processing, and if their crime requires it, are incarcerated until they are either bonded out, are released from custody on their own recognizance, or are ordered to remain in custody until the disposition of their trial.
Phone: 406-429-6551
Physical Address:
201 E. Main
Winnett, MT 59087
Mailing Address (personal mail):
Inmate's first and last name
Fergus County Detention Center
21 8th Ave S,
Lewistown, MT 59457
Other Jails and Prisons
To search for an inmate in the Petroleum County 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 406-429-6551 for the information you are looking for.
Petroleum County Jail Inmate Search
We’ve compiled a list of Frequently Asked Questions and Answers for everything you need to know about finding an inmate in the Petroleum County Jail, how the jail rosters work and what happens after an offender is arrested and booked. If you still have questions after reviewing these FAQs, call 406-429-6551 for further assistance.
The Petroleum County Jail maintains an average of offenders in custody on any given day. The Petroleum County 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 Petroleum County law enforcement agencies arrest and detain approximately 800 offenders.
⇓ Learn more ⇓ Show less
The Petroleum County Jail is CLOSED. Offenders in Petroleum County are housed in Fergus County.
After an arrest, individuals are transported to Petroleum County Jail for the booking process. This procedure ensures the person’s identity, assesses charges, and determines if they will be released, eligible for bail, or detained until court.
Remaining silent during this process is vital. Anything said could be used as evidence, so it’s wise to wait for an attorney before speaking about the arrest.
Here’s a breakdown of the booking steps at Petroleum County Jail:
The booking process varies in duration, taking anywhere from an hour to 48 hours. For questions about an arrestee’s bond, call the facility at 406-429-6551.
When an individual is arrested and booked at Petroleum County Jail in Winnett, the outcomes include:
1. Release without bail, under the condition they appear for their court date.
2. Remain in custody until the court appearance.
3. Post a bail or bond for release. Contact 406-429-6551 for specific bail amounts.
Bail payments can be made in different ways.
For further information on posting bail in Petroleum County, Montana, visit the Petroleum County Jail Bail Information Page.
Learn even more ⇓ Learn more ⇓ Show less
What are the other City and County Jails in Petroleum County?
What are the other Jails in the Neighboring Counties surrounding Petroleum County?
This facility, known as "Petroleum County Jail" is also known as Petroleum County Jail & Sheriff, *INMATES ARE HOUSED IN FERGUS COUNTY JAIL, Petroleum County Jail & Sheriff , Petroleum County Jail & Sheriff , Montana, Petroleum.
The Petroleum County Jail serves the following cities and towns of Petroleum County: Winnett.
