Buy Postage Stamps in Clayton, CA

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

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

Clayton Post Office

6150 Center St
Clayton, CA 94517
Clayton Post Office is a full post office where stamps can be purchased.

Safeway

5431 Clayton Rd
Clayton, CA 94517
 
Safeway is a USPS-authorized retailer where postage stamps are sold.

Walgreens

5437 Clayton Rd
Clayton, CA 94517
 
Walgreens is a USPS-authorized retailer where postage stamps are sold.

CVS

6490 Clayton Rd
Clayton, CA 94517
 
CVS is a USPS-authorized retailer where postage stamps are sold.