Police and sheriff · California

Law Enforcement Agencies in Placer County, California

10 agenciesFBI UCR list

The FBI's Uniform Crime Reporting program lists 10 law enforcement agencies in Placer County, California: the county sheriff's office, 4 city or town police departments, 2 state police posts and 3 other agencies.

Sheriff's Office and County Police in Placer County

  • Placer County Sheriff's OfficeCounty sheriff or police · ORI CA0310000 · NIBRS since 2023

City and Town Police Departments in Placer County

  • Auburn Police DepartmentCity or town police · ORI CA0310100 · NIBRS since 2021
  • Lincoln Police DepartmentCity or town police · ORI CA0310300 · NIBRS since 2021
  • Rocklin Police DepartmentCity or town police · ORI CA0310400 · NIBRS since 2021
  • Roseville Police DepartmentCity or town police · ORI CA0310500 · NIBRS since 2023

State Police in Placer County

  • Highway Patrol: Auburn Area OfficeState police · ORI CA0319920 · NIBRS since 2021
  • Highway Patrol: Gold Run Area OfficeState police · ORI CA0319921 · NIBRS since 2021

State Agencies in Placer County

  • California Department of Forestry and Fire Protection: Nevada-Yuba-PlacerState agency · ORI CA0311300 · NIBRS since 2023
  • California State Parks: SierraState agency · ORI CA0310700 · NIBRS since 2021

Other Law Enforcement Agencies in Placer County

  • Union Pacific Railroad: Placer CountyOther agency · ORI CA0311200 · NIBRS since 2025

Where People Arrested in Placer 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.

Law Enforcement in Other California Counties

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 Placer County?
The FBI lists 10 law enforcement agencies in Placer County, including 4 city or town police departments. The full list is on this page.
Who runs the jail in Placer County?
In most counties the sheriff runs the county jail. In Placer County that is the Placer County Sheriff's Office. See Placer 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 CA0310500. It is useful when you request records or read crime statistics.