Buy Postage Stamps in Ontario, CA

Post Offices and USPS-authorized retailers where postage stamps are sold in Ontario, CA.

All the locations below sell USPS postage stamps which can be used to mail First Class letters in the United States. We list both official post offices run by the United States Postal Service and retailers which have been authorized by USPS to sell postal products in Ontario.

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Post Office Name	City/State	Address	Phone Number	Action
Downtown Ontario Post Office	ONTARIO, CA 91762	123 W Holt Blvd	9099333837	View Details Get Directions
Ontario Post Office	ONTARIO, CA 91761	1555 E Holt Blvd	9099333837	View Details Get Directions
Plaza Center Post Office	ONTARIO, CA 91762	1126 N Mountain Ave	9099333837	View Details Get Directions
Ontario Village Post Office	ONTARIO, CA 91762	1118 W Mission Blvd Ste D	9093913700	Get Directions
Cvs	ONTARIO, CA 91762	2238 S Euclid Ave Ste A	--	Get Directions
Cvs	ONTARIO, CA 91761	2456 S Grove Ave	--	Get Directions
Food 4 Less	ONTARIO, CA 91762	2246 S Euclid Ave	--	Get Directions
Office Depot	ONTARIO, CA 91761	2205 S Grove Ave	--	Get Directions
Ralphs	ONTARIO, CA 91761	3075 S Archibald Ave Bldg C	--	Get Directions
Staples	ONTARIO, CA 91764	921 N Milliken Ave	--	Get Directions
Stater Bros	ONTARIO, CA 91762	1105 W Philadelphia St	--	Get Directions
Stater Bros	ONTARIO, CA 91764	1939 E 4th St	--	Get Directions
Stater Bros	ONTARIO, CA 91762	646 W Holt Blvd	--	Get Directions
Walgreens	ONTARIO, CA 91761	2950 S Archibald Ave	--	Get Directions

Mailbox in nearby cities

City	No. of Mailboxes	UPS Mailboxes
POMONA, CA	52	9
RCH CUCAMONGA, CA	28	7
UPLAND, CA	25	12
CLAREMONT, CA	21	3
CHINO, CA	16	7
RANCHO CUCAMONGA, CA	15	10
MONTCLAIR, CA	9	3
EASTVALE, CA	3	3
ALTA LOMA, CA	2	2
GUASTI, CA	1	1

Frequently asked questions

Where can I buy forever stamps in Ontario?

You can buy USPS® Forever® stamps at any post office or USPS® authorized reseller. Forever® stamps can always be used to mail a standard one-ounce letter, regardless of the current postal rate. This makes them the perfect sheet of stamps to keep on hand if you only occasionally mail letters.

Can I purchase stamps online and print them using my printer?

Yes, you can purchase stamps online and print them using your home printer at Stamps.com, all without having to go to the store.

Where is the cheapest place to buy stamps in Ontario?

The cheapest place to buy stamps is your local post office. A sheet or book of 20 stamps usually offers the best deal.