The USPS provides free boxes and envelopes for Priority Mail and Priority Mail Express services. You can pick these up at the counter or order them in bulk online at no charge.
Understanding which boxes cost money depends entirely on the shipping service you choose. can you buy boxes at the post office
While Priority Mail boxes are free to use with their respective services, retail prices for prepaid or generic options at the post office are as follows (as of April 2026): The USPS provides free boxes and envelopes for
If you are using services like USPS Ground Advantage (formerly First-Class Package Service) or Media Mail, you must provide your own packaging. Most post offices sell generic ReadyPost boxes and tubes for these situations. Standard Box Options and Prices (Retail) While Priority Mail boxes are free to use
Most USPS Post Office locations stock a variety of packaging materials, including both retail boxes for purchase and free supplies for specific shipping services. Free vs. Paid Boxes
Are USPS Boxes Free? Get Free Shipping Supplies ... - Shippo