Pack of 10 or 25 15" (L) x 12" (W) x 3-1/8" (H) $0.00 Priority Mail® Forever Prepaid Flat Rate Small Box Includes Customer's Return Address 8-11/16" (L) x 5-7/16" (W) x 1-3/4" (H) $12.60

Use USPS PO Boxes for business or personal use. Learn how to reserve, rent, renew, and manage a PO Box online, as well as how much a PO Box costs.

The Priority Mail Flat Rate® Medium Box is an easy way to ship featuring predetermined rates regardless of weight (domestically) or destination. This item ships in single, or a pack of 10 or …

Pack of 10 12-1/2" (L) x 9-1/2" (H) $0.00 Priority Mail® Forever Prepaid Flat Rate Small Box Includes Customer's Return Address 8-11/16" (L) x 5-7/16" (W) x 1-3/4" (H) $12.60

Shop our selection of Free Shipping Supplies Shipping Supplies on the USPS.com Postal Store

Additional Postage (25) Boxes (24) International (20) Portfolios (18) Federal Duck Stamps (17) Envelopes (16) Pin Sets (16) Forms and Labels (15) Yearbooks & Stamp Packets (13) Priority …

All USPS ® Priority Mail and Express Mail packaging material is available free of charge at Post Offices™ or may be ordered online at no additional cost and shipped to any home or business.

Welcome to USPS.com. Track packages, pay and print postage with Click-N-Ship, schedule free package pickups, look up ZIP Codes, calculate postage prices, and find everything you need …

Priority Mail, including Priority Mail Flat Rate shipping products, has fast shipping times (2-3 days) with flexible prices. Get free flat rate boxes and print postage labels online.

Select another box size or Post Office™ location to find an available box. If you choose to apply for the waitlist, we will send general details on timing and upcoming availability in your waitlist …