How to Address a Postcard, Step by Step

The short answer: on the back, on the right-hand side. A standard postcard has two printed faces. The front is the picture side, where your photo, artwork, or marketing design lives. The back is the correspondence side, and it is split by a vertical line into two halves. Everything to do with delivery (the recipient address, your return address, and the stamp) sits on the right half of that back.

That layout is not a matter of taste, it is how postal sorting works. The post office reads the lower-right portion of the address side with automated equipment, so the address has to land where the machines expect it. Put it anywhere else and the card gets pulled for slower manual handling. If you are ordering cards to mail, our postcards printing already lays the back out this way, with the divide, the address block, and the stamp box in the right places.

The rest of this guide walks the address side from top to bottom, one step at a time. If you only need the mailing rules (stamps, rates, and what the post office will accept), the companion guide on mailing postcards covers those in depth.

This is the part the post office actually reads, so it earns the most care. Write the recipient address as a clean, left-aligned block in the lower-right area of the back. Use three or four lines: the recipient name on the first line, the street address or PO box on the second, and the city, state, and ZIP code on the last. Adding the full ZIP+4 helps the card sort a step faster.

Legibility beats style here. Sorting machines read plain, evenly spaced characters far better than tight cursive or a decorative font, and they do not need commas or periods to do their job. If your handwriting is a gamble, printed address labels give you a crisp, scannable block every time, and they are the same kind of labels our mailing team applies on bulk runs. Leave a clear margin around the block so nothing runs off the edge.

Mailing something more formal, like an invitation set? The etiquette is different, with titles and inner envelopes to think about, and our guide on addressing wedding invitations covers that side. For an international card, add the destination country on its own final line in capital letters.

Now the fun half. The left side of the back is your open space for a note. Many people start with the date in the top-left of that message area, then write below it. Postcards are short by design, so a few warm lines usually beat a wall of text, and there is no envelope, which means anyone who handles the card can read it. Save anything private for a sealed letter.

Stay inside the left half. When your writing drifts across the center line it lands in the address zone and can trip up the sorting equipment. If you run out of room, tighten the message rather than spilling over. On a printed marketing card the left side is where your headline, offer, and details live, so treat that space with the same care you would give the front.

Want the card to do more than sit on a fridge? A QR code turns that quiet left half into a link to your site, a booking page, or a promotion, and it is one of the easiest ways to make a printed card measurable.

The last step is postage, and it goes in the top-right corner of the address side, above the recipient address. Postcards mail at the reduced postcard rate, which is cheaper than a standard letter, so reach for a postcard stamp or a Forever stamp and check the current USPS postcard price before you drop it in the box. One stamp, one corner, done.

Two things to watch. First, the card has to meet the post office size limits to qualify for the postcard rate. An oversized card mails at letter prices instead. Second, keep the stamp corner clean so the cancellation mark has somewhere to land. Our guide on stamps, addresses, and mailing rules spells out the sizes and rates in full.

Mailing a stack rather than a single card? You do not have to lick a single stamp. A printed indicia or permit imprint replaces individual postage on bulk runs, which is exactly how the direct mail approach in the next section works.

Most delayed postcards come down to the same handful of slips. The biggest one is putting the address on the wrong side or the wrong half, so it lands where the scanner is not looking. Close behind is a missing or wrong ZIP code, which forces the card into manual sorting. Both are easy to avoid once you know the address belongs in the lower-right of the back.

The rest are about legibility and space. Writing too close to the edges, using a decorative or heavily slanted font, printing pale ink on a busy background, or letting your message cross into the address zone all make the card harder to read, by a person and by a machine. Skipping the return address is another quiet mistake, because a card that cannot be delivered then has nowhere to go.

The fix for nearly all of them is the same: a clean, high-contrast, left-aligned block on the right side, a clear stamp corner, and a return address up top. If you are printing at volume, letting the addresses print by variable data removes the human error entirely.