Buy Postage Stamps in Johnstown, CO

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

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 Johnstown.

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

Johnstown Post Office

121 Castle Pines Ave
Johnstown, CO 80534
Johnstown Post Office is a full post office where stamps can be purchased.