A postcard stamp costs $0.65 in 2026
USPS charges $0.65 to mail a postcard at retail. To get that price, the card must be between 5 and 6 inches long and 3.5 and 4.25 inches high. Bigger cards pay the letter price of $0.82.
Postcard prices and sizes from USPS
| Postcard postage, retail | $0.65 |
|---|---|
| Minimum size | 5 by 3.5 inches |
| Maximum size for postcard price | 6 by 4.25 inches |
| Thickness | 0.007 to 0.016 inch |
| Letter price if the card is too big | $0.82 |
Commercial postcards can be up to 9 by 6 inches and still pay $0.65. Source: USPS Notice 123, Price List, effective July 12, 2026 (Postal Explorer).
What changes your price
- Size. A retail card over 6 by 4.25 inches pays the letter price.
- Thickness. Cards must be between 0.007 and 0.016 inch thick.
Ways to pay less
- Measure before you mail. A card inside 6 by 4.25 inches saves $0.17.
- For 100 cards, postage is $65 at the postcard price.
How we got these numbers
USPS sets one national price for postcard stamp. Every price on this page comes from USPS Notice 123, the official price list the Postal Service publishes. The prices we use took effect on July 12, 2026. Where we show a total, we simply add up the separate USPS fees, so you can see what one item costs all in. We do not add our own guesses or use a calculator, because USPS sets these fees and they are the same at every Post Office. USPS changes its prices from time to time, so check the price at the counter if your visit is far from September 26, 2026, the day we last checked.
Common questions
How much is a postcard stamp in 2026?
$0.65.
What size is a postcard for USPS?
5 to 6 inches long and 3.5 to 4.25 inches high for the retail price.
Can I use a Forever stamp on a postcard?
Yes, but it is worth $0.82, so you pay $0.17 more than you need to.