JCPI Investigative Services Address: 1030 N Mountain Ave, Ontario, CA 91762 (866) 395-0701 Click to Call Claim Ownership Send to friend Send Inquiry Print Map Overview Address: 1030 N Mountain Ave, Ontario, CA 91762 City: Ontario State: CA Post Code: 91762 Areas of Coverage: Ontario, CA Languages Spoken: English Payments Accepted: Credit/Debit Card,Cash