To Buy Flat Rate Boxes - Where

: You cannot use your own box and claim the flat rate price; you must use the branded USPS Flat Rate container.

: You can call the USPS Package Supply Center at 1-800-610-8734 to request free supplies by phone. Alternative and Retail Options

: You can order boxes in bulk (typically packs of 10 or 25) directly from the USPS Postal Store . They are shipped to your home or business at no cost, usually arriving within 2–5 business days. where to buy flat rate boxes

: Flat rate boxes are intended for a single shipment and cannot be reused for subsequent mailings.

While USPS is the direct provider, you may find boxes at other retailers, though some may charge a nominal fee or require specific service usage: : You cannot use your own box and

You can obtain official USPS flat rate packaging through these official channels:

: Most retail locations have a dedicated area in the lobby where you can pick up a few boxes for free. High-volume types like Medium and Large boxes are almost always in stock. They are shipped to your home or business

: Retailers like Office Depot and Staples often stock these boxes. They may be free if you use their on-site shipping services.