Additional Ounce Stamps

Extra-ounce stamps add postage when a First-Class Mail letter weighs more than one ounce. The products displayed below come from the live BuyUSPSStamps.com catalog; current price and availability are shown on each product card and listing.
Current catalog selection: 2 matching products after applying this category’s stated rule.
How to choose
Compare the printed postage purpose, pack quantity, and live stock status.
Postage function: Check whether the stamp is Forever, fixed denomination, or tied to a particular mail type.Pack format: Compare sheets, books, rolls, and total stamp quantity.Order details: Use the live price, stock message, and purchase controls rather than historical figures.
What belongs in this category
Only products explicitly sold for the additional-ounce postage function belong here; a decorative Forever stamp is not automatically an additional-ounce stamp.
Before mailing
Postage depends on the finished mailpiece and service. Review our postage and stamp quantity guide, or verify a specific mailing with the USPS postage calculator.
Buying information
See our shipping terms and refund and returns policy. BuyUSPSStamps.com is an independent online retailer and is not the U.S. Postal Service.
Part of our topic guide: Types Of Stamps.