Post Offices in & near Ontario, California. Operating hours, locations, phone/fax number, services information.
Downtown Ontario Post Office in Ontario, California on W Holt Blvd. Operating hours, phone number, services information, and other locations.
Address: 123 W Holt Blvd, Ontario, CA 91762
Phone: 909-933-3837
Fax: 909-391-0595
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Address: 1126 N Mountain Ave, Ontario, CA 91762
Phone: 909-933-3837
Fax: 909-391-3243
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Address: 1555 E Holt Blvd, Ontario, CA 91761
Phone: 909-933-3837
Fax: 909-988-4023
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Address: 5186 Benito St, Montclair, CA 91763
Phone: 909-624-5438
Fax: 909-626-8096
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Address: 333 E Arrow Hwy, Upland, CA 91785
Phone: 909-946-8134
Fax: 909-981-9724
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
Address: 5375 Walnut Ave, Chino, CA 91708
Phone: 909-364-1361
Fax: 909-591-3778
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457
