Law Enforcement Agencies in Petroleum County, Montana
1 agenciesFBI UCR list
The FBI's Uniform Crime Reporting program lists 1 law enforcement agency in Petroleum County, Montana: the county sheriff's office.
Sheriff's Office and County Police in Petroleum County
Petroleum County Sheriff's OfficeCounty sheriff or police · ORI MT0350000 · NIBRS since 2005
Where People Arrested in Petroleum County Are Held
In most U.S. counties, adults arrested by city police, the sheriff or state troopers are booked into the county jail first. Some larger cities run their own holding jail, so if a person is not on the county roster, call the arresting department.
Agency names, types and ORI codes come from the FBI Crime Data Explorer agency list, retrieved November 2026. NIBRS dates show when an agency began reporting incident-level crime data to the FBI.
Frequently Asked Questions
How many police departments are in Petroleum County?
The FBI lists 1 law enforcement agencies in Petroleum County, including 0 city or town police departments. The full list is on this page.
Who runs the jail in Petroleum County?
In most counties the sheriff runs the county jail. In Petroleum County that is the Petroleum County Sheriff's Office. See Petroleum County Jail on this site for the jail's roster or contact details.
What is an ORI number?
An ORI is the nine-character identifier the FBI assigns to each law enforcement agency for crime reporting, for example MT0350000. It is useful when you request records or read crime statistics.
