Buy Postage Stamps in Los Osos, CA

Post Offices and USPS-authorized retailers where postage stamps are sold in Los Osos, 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 Los Osos.

Need to mail a letter? See Mailboxes and Post Offices in Los Osos

Los Osos Post Office

1189 Los Osos Valley Rd
Los Osos, CA 93402
Los Osos Post Office is a full post office where stamps can be purchased.


1240 Los Osos Valley Rd
Los Osos, CA 93402
Ralphs is a USPS-authorized retailer where postage stamps are sold.