This is the most reliable place to buy exactly one stamp. You can purchase them at the full-service retail counter or use a USPS Self-Service Kiosk located in many post office lobbies.
If you only need one stamp, your best options are locations that offer flexibility beyond the standard 20-stamp booklet:
Many major retailers partner with the USPS but usually require the purchase of a full booklet (20 stamps). It is always worth asking at the customer service desk if they can break a booklet for you, though it is not standard practice: Where to Buy Stamps Nearby where to buy one stamp
"Old school" neighborhood liquor or convenience stores often sell individual stamps to customers.
Unlike many other major pharmacies, some Walgreens locations are noted for selling both booklets and individual stamps. This is the most reliable place to buy exactly one stamp
Some financial institutions, such as Bank of America , Chase , or Key Bank , may offer single stamps or coils through their tellers or select ATMs. Common Retailers (Typically Booklet Only)
Finding a single postage stamp is straightforward if you know where to look. While many large retailers only sell stamps in full booklets of 20, several options exist for purchasing a single stamp to suit your immediate mailing needs. Where to Buy a Single Stamp It is always worth asking at the customer
Locations like The UPS Store or independent mail centers often sell single stamps, though they may charge a small convenience fee above the standard USPS rate.