Many national chains are authorized to sell USPS stamps. Typically, these are sold in at the customer service desk or the checkout lane.
: You can walk into any USPS branch and buy stamps at the counter or from self-service kiosks (available 24/7 in many lobbies). where to buy forever postage stamps
Forever stamps are a convenient way to mail standard letters because they never expire, even if postage rates increase. You can purchase them at a wide variety of physical locations and online platforms. Many national chains are authorized to sell USPS stamps