Postcard Size Dimensions

For 1st class Postcard rates, the USPS requires your card to be:

  • Minimum size: 3-1/2″H x 5″W x  0.007″ thick
  • Maximum size: 4-1/4″H x 6″W x  0.016″ thick

Larger cards are considered oversized and are charged at the Letter or Large Envelope Rate.

This rate allows the postcard to be mailed from any U.S. location, to any U.S. location — that is, locations with a Zip Code.

Source:  USPS

Please note that our Magnet Mailers  need to be mailed at the 2 oz letter rate and not the postcard rate.  This is because our postcard magnets are considered Machinable and Non-Automated.  Regardless, we can provide big postage discounts by mailing in bulk.

Check out how to promote your organization with our magnet mailers at magnetbyMail.com .

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About postcardmagnets the USPS Postcard Blog

We print and mail Postcard Magnets. That's a large, laminated postcard and a magnet attached. They're used in mailing campaigns to promote a message or website. They're useful for businesses, non-profits, government groups, alumni associations and for political advertising. Our website is at magnetbyMail.com (please be sure to visit...) [Sorry, we're not an official USPS website -- better to check with them on any updated rates and rules...] View all posts by postcardmagnets the USPS Postcard Blog

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