Law Enforcement Agencies in Sierra County, California
2 agenciesFBI UCR list
The FBI's Uniform Crime Reporting program lists 2 law enforcement agencies in Sierra County, California: the county sheriff's office and 1 other agency.
Sheriff's Office and County Police in Sierra County
Sierra County Sheriff's OfficeCounty sheriff or police · ORI CA0460000 · NIBRS since 2022
Other Law Enforcement Agencies in Sierra County
Union Pacific Railroad: Sierra CountyOther agency · ORI CA046020X · NIBRS since 2025
Where People Arrested in Sierra 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 Sierra County?
The FBI lists 2 law enforcement agencies in Sierra County, including 0 city or town police departments. The full list is on this page.
Who runs the jail in Sierra County?
In most counties the sheriff runs the county jail. In Sierra County that is the Sierra County Sheriff's Office. See Sierra 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 CA0460000. It is useful when you request records or read crime statistics.
