Nadia Petrov Customer Education Lead at 4OVER4.COM
Nadia is our customer education voice, built from the knowledge of our production team, with over 20 years in printing.
Question
What is the minimum size Postcard the USPS will accept for mailings?
Answer
The smallest postcard the USPS will accept for mailing is 3.5 inches by 5 inches.
- Anything smaller than 3.5" x 5" is nonmailable and will be returned
- Cards should be rectangular to avoid extra handling fees
- Larger cards may fall into different postage rate categories
- Check current USPS mailing standards for the latest requirements
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