42 security guard and private security companies in Ontario, California. Ranked by license status, profile views and recommendations.
Part of the directory of security companies in California. New to California? See how California security licensing works.
42 companies
ABOVE ALL SECURITY
ADVANCED MONITORING, INC.
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AMETHYST PROTECTIVE SERVICES, INC
ANDY FRAIN SERVICES
D & R PROTECTION SYSTEMS
G & G SECURITY INC
HAYWOOD SECURITY SOLUTIONS
HCI SYSTEMS, INC.
INTEGRITY SECURITY PATROL SERVICES
KINGDOM RISK MITIGATION SERVICES INC
KINGZ PROTECTION AND SECURITY SERVICES
PLATINUM GROUP PROTECTION
REACTIVE PATROL SERVICES
THIRD SHIFT SECURITY
TRICE TOP TIER SECURITY
TRITON GLOBAL SERVICES, INC.
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Ontario is a central Inland Empire logistics hub, home to Ontario International Airport, sprawling distribution centers, and the Ontario Mills retail complex. Warehouse and cargo activity along the I-10 and I-15 corridors drives heavy demand for industrial guards, gate access control, and overnight yard patrol, while Ontario Mills and surrounding retail add loss-prevention and commercial patrol work.
The providers below are ranked on merit, but the final check is yours. Work through these four steps before you sign anything in Ontario:
Private security in California is licensed at the state level by the California Bureau of Security and Investigative Services (BSIS), Department of Consumer Affairs. A legitimate company operating in Ontario holds a Private Patrol Operator (PPO) license, which means it has cleared California BSIS's ownership, background-check and insurance requirements. Ask for that license number in writing and verify it yourself — a certificate on the wall tells you nothing about current standing, since a license can be suspended or revoked.
Hiring an unlicensed company is a risk you carry. In California, operating without a license is misdemeanor (Cal. Business & Professions Code §7582.3). Operating as an unlicensed private patrol operator (or knowingly engaging a non-exempt unlicensed one) is a misdemeanor punishable by a $5,000 fine, up to one year in county jail, or both; falsely holding oneself out as licensed (badge, ID/business card, letterhead, or advertising) is a separate misdemeanor with a fine up to $10,000, and a conviction bars BSIS licensure for one year (five years on a second offense).
Ontario scores 75/100 on our Crime Index (grade B), which makes it safer than 57% of the 759 US cities we track. The index is built from FBI Crime Data Explorer reports for a population of 187,756.
Crime Index
Crime rates describe a city, not a specific address — the right level of coverage depends on your block, your hours and what you're protecting. Use the neighborhood breakdown to see how Ontario varies internally before you scope a contract.
See the full Ontario Crime Index and neighborhood breakdown