Ontario Police Department

Ontario Police Department is the municipal law-enforcement agency for the City of Ontario in San Bernardino County, California, based at 2500 S. Archibald Avenue. The department serves residents, businesses, and visitors within Ontario limits in San Bernardino County. Its area of responsibility covers patrol and response to calls for service, traffic enforcement, criminal investigations inside the city, and community policing programs that support local neighborhoods and commercial corridors. Ontario sits across a California jurisdiction where seasonal and year-round residents share the roads, and the police department is the primary local law-enforcement presence for day-to-day public safety inside the city. Public safety emergencies in Ontario should be reported by dialing 911.

According to the U.S. Census Bureau (ACS 2023), Ontario city, CA has an estimated population of 178,347.