San Bernardino County Post Office

Find San Bernardino County California post offices and USPS mailing boxes. Post offices provide information on bulk mail services, domestic mail delivery, international shipping, change of address, mail forwarding, PO boxes, and passport services.


Adelanto Post Office 11530 Rancho Road Adelanto CA 92301 760-246-4300


Alta Loma Post Office 6649 Amethyst Avenue Rancho Cucamonga CA 91701 909-987-0785

Angelus Oaks Post Office 37696 Highway 38 Angelus Oaks CA 92305 909-794-2909

Apple Valley Post Office 22099 Highway 18 Apple Valley CA 92307 760-247-0640

Baker Post Office 1 Lakeview Dr Baker CA 92309 760-733-4373

Barstow Post Office 425 South 2nd Avenue Barstow CA 92311 760-256-9304

Big Bear City Post Office 120 West Country Club Boulevard Big Bear City CA 92314 909-585-7132

Big Bear Lake Post Office 472 Pine Knot Avenue Big Bear Lake CA 92315 909-866-1035

Bloomington Post Office 10191 Linden Avenue Bloomington CA 92316 909-877-5042

Blue Jay Post Office 27177 Highway 189 Blue Jay CA 92317 909-337-0394

Cedar Glen Post Office 28982 Hook Creek Road Lake Arrowhead CA 92321 909-337-4614

Cedarpines Park Post Office 201 Nardy Lane Crestline CA 92322 909-338-5489

Chino Hills Post Office 14071 Peyton Drive Chino Hills CA 91709 909-548-0695

Chino Post Office 5375 Walnut Avenue Chino CA 91708 909-364-1361

Colton Post Office 265 North 7th Street Colton CA 92324 909-825-2154

Crestline Post Office 23921 Lake Drive Crestline CA 92325 909-338-5489

Daggett Post Office 33530 C Street Daggett CA 92327 619-254-2693

Del Rosa Post Office 1663 e Date Place San Bernardino CA 92404 909-882-5294

Downtown Ontario Post Office 123 West Holt Boulevard Ontario CA 91762 909-933-3837

Earp Post Office 144977 Aqueduct Road Earp CA 92242 760-665-2744

About Post Offices

What Change of Address options are available?

Customers can request a temporary or permanent Change of Address either online or in person at the Post Office using PS Form 3575. The online application for Change of Address has a $1.00 identity validation fee.

Is it possible to insure mail and items sent via the USPS?

Yes. Standard mail can be insured for up to $5,000 for an additional fee. Registered mail items can be insured for up to $50,000.

What is the USPS Office of Inspector General?

The Office of Inspector General (OIG) is a division within the USPS responsible for ensuring the integrity and accountability of the postal service. It conducts investigations to safeguard the postal system and performs audits and reviews.