No, postcard stamps do not expire. Like a standard Forever Stamp, a postcard stamp is priced to always cover the current postcard rate — no matter when you bought it, how old it is, or how many times the rate has gone up since. A postcard stamp from a decade ago works exactly the same as one bought today.
That said, “postcard Forever stamps” work a little differently than people expect, and there’s some genuine confusion out there between postcard stamps, regular Forever Stamps, and Global Forever stamps. Here’s the full picture.
What is a Domestic Postcard Stamp?
A domestic postcard stamp is a U.S. postage stamp intended to cover the postage required to mail an eligible postcard within the United States.
The postcard rate is lower than the standard rate for a one-ounce First-Class letter. Because of this, USPS has issued stamps specifically intended for postcard-rate mail.
Current 2026 domestic postcard rate: 65¢
The current USPS retail standards specify that a domestic postcard must generally be:
- At least 5 inches long
- At least 3½ inches high
- No more than 6 inches long
- No more than 4¼ inches high
- Between 0.007 and 0.016 inch thick
If a postcard does not meet the applicable requirements, it may be charged at a different rate.
Quick Reference: Current USPS Postcard Rates
| Mail Category | Rate | Stamp Required |
| Standard Domestic Postcard | $0.65 | 1 Postcard Stamp (or $0.65 in valid postage) |
| Oversized Postcard (e.g., 5″ × 7″) | $0.82 | 1 First-Class Mail Forever Stamp |
| International Postcard (Any destination) | $1.75 | 1 Global Forever Stamp (or equivalent postage) |
Are Postcard Stamps Actually “Forever” Stamps?
Technically, no — but functionally, yes. USPS doesn’t officially call them “Forever” stamps; it classifies them as “Non-denominated, priced at the Postcard rate.” In plain terms, that means the stamp doesn’t have a dollar value printed on it — just the word “POSTCARD” — and it automatically stays valid for whatever the current postcard rate is, exactly like a Forever Stamp does for the letter rate.
So while you won’t see the word “Forever” printed on one, it behaves identically: buy it now, use it years from now, no issue.
Postcard Stamp vs. Forever Stamp: What’s the Difference?
| Comparison | Postcard Stamp | Forever Stamp |
|---|---|---|
| Covers | A standard postcard | A standard 1 oz First-Class letter |
| Current price (2026) | $0.65 | $0.82 |
| Says “Forever” on it? | No — says “Postcard” | Yes |
| Expires? | No | No |
| Valid for letters? | No — underpays | Yes |
| Valid for postcards? | Yes | Yes, but overpays by $0.17 |
The short version: you can use a Forever Stamp on a postcard, you’ll just be paying 17 cents more than necessary. You cannot use a postcard stamp to mail a letter — it doesn’t cover the higher rate, and USPS may return the item or bill the recipient for the difference.
How Many Postcard Stamps Do I Need?
One. A single postcard stamp, at the current $0.65 rate, fully covers one standard-size domestic postcard. You don’t need to combine stamps or add postage unless your postcard is oversized or unusually heavy (rare, but it happens with thicker cardstock or photo postcards).
Are My Old Postcard Stamps Still Good? (Yes — Here’s the Design History)
Since postcard stamps are non-denominated, any postcard-rate stamp you own from any year is still fully valid today, regardless of the design or when it was printed. USPS typically releases one new postcard-stamp design per year, so if you’ve got older ones sitting in a drawer, here’s what you might be holding:
- Vibrant Leaves (2025) — the current design, five different leaf photographs (aspen, sassafras, oak, maple, sweetgum)
- Sailboats (2023) — two abstract sailboat illustrations
- Barns (2021) — American barns across four seasons
- Coral Reefs (2019) — coral and reef fish artwork
- Seashells (2017) — four designs, including the alphabet cone and Queen conch
- Coastal Birds (2015) – four coastal bird species
If you’re holding a stamp from 2019, or any other older postcard design not listed here, the same rule applies: as long as it says “POSTCARD” and not a specific cent value, it’s still good today. Only genuinely old-style stamps with a printed dollar amount (like “34¢”) need extra postage added to reach the current rate.
Does a Postcard Stamp Work for International Mail?
No — this is one of the most common mix-ups. A domestic postcard stamp only covers mail within the United States. Sending a postcard internationally requires the international rate ($1.75), covered by a Global Forever stamp, not a standard postcard stamp. If you’re active on Postcrossing and sending cards overseas, make sure you’re reaching for Global Forever, not your postcard stamp stock — this is genuinely worth double-checking before you drop something in the mailbox.
Postcard Mailing Checklist
Before dropping your cards in the blue collection box:
- Measure: Is the card between 3.5″ × 5″ and 4.25″ × 6″?
- Check Shape: Is it a rectangle (not a square, circle, or die-cut shape)?
- Address Placement: Did you leave the bottom right quadrant clear for the recipient’s address and the bottom 5/8″ free of dark print for the barcode?
- Postage: Standard postcard = 1 Postcard Stamp ($0.65); 5×7 card = 1 Forever Stamp ($0.82); International = 1 Global Forever Stamp ($1.75).
Where to Buy Postcard Forever Stamps
Postcard stamps are sold at Post Office locations nationwide, through USPS Store, or by mail through USA Philatelic. They’re also available through Amazon’s USPS Officially Licensed Collection and various third-party retailers, though buying directly from USPS guarantees you’re getting the current design at face value.
Looking for the best places to buy postage stamps? Explore our Where to Buy Stamps guide to find out where you can purchase stamps online and in stores.
One honest note: USPS doesn’t currently offer a dedicated subscription or auto-delivery service specifically for stamps the way you might expect from a subscription box. If you mail postcards regularly, the more practical approach is simply buying a full pane (usually 20) at once so you’re not making repeat trips.
Frequently Asked Questions FAQs
Do postcard stamps expire?
No. Postcard stamps are non-denominated and always valid for the current postcard rate, regardless of when they were purchased.
Are postcard stamps the same as Forever stamps?
Not officially — USPS labels them “Postcard rate” rather than “Forever” — but they function the same way: always valid, no expiration.
What’s the difference between a postcard forever stamp and a regular forever stamp?
A postcard stamp covers only the postcard rate ($0.65); a regular Forever Stamp covers a 1 oz letter ($0.82). You can use a Forever Stamp on a postcard, but not the reverse.
How many postcard stamps do I need for one postcard?
Just one, for a standard-size domestic postcard.
Can I use postcard stamps for international mail?
No. International postcards require the $1.75 international rate, covered by a Global Forever stamp instead.
Where can I buy postcard Forever stamps?
At any Post Office, through USPS store, by phone, or by mail through USA Philatelic.
Are 2019 (or other older) postcard stamps still good?
Yes, as long as they’re marked “POSTCARD” rather than a specific cent value, they remain valid today regardless of the year printed.
