Public Safety Services

Los Angeles County Sheriff’s Department

What are Part 1 Crimes?

Part 1 Crimes are a category of more serious offenses defined in uniform crime reporting by the Los Angeles County Sheriff's Department and FBI. For reporting purposes, Part 1 Crimes are categorized as either violent or property crimes.

Additonal details may be viewed by clicking through any of the charts to access the City's crime statistics dashboard. Data sources: City of Diamond Bar, Los Angeles County Sheriff's Department

For more information about public safety, review the annual Public Safety report at