Are USPS Boxes Free? How to Get Free Shipping Supplies from the Post Office

Yes, USPS boxes are free — but only for Priority Mail and Priority Mail Express, which are USPS's faster and more expensive parcel services. The cheaper options — Ground Advantage, Media Mail, First-Class Mail, and Parcel Select — all require you to supply your own packaging. If you ship a Priority Mail box on a non-Priority service, USPS's Automated Package Verification system detects the mismatch and upcharges your postage to the full Priority Mail rate.
In this article
- Where to get free USPS boxes
- Which USPS services get free packaging?
- Every free Priority Mail box and envelope (with dimensions)
- Free Priority Mail Express packaging
- Other free supplies: labels, forms, customs pouches
- What happens if you use a Priority Mail box on Ground Advantage
- What changed in 2025–2026: Tyvek to poly, rate increase
- How much you save by using free boxes
- Are UPS and FedEx boxes also free?
- Frequently asked questions
Where to get free USPS boxes
Two ways:
Order online at store.usps.com. Browse the free shipping supplies section, choose your pack sizes (typically 10 or 25 per pack, though some items like Priority Mail Address Labels have per-product caps), and USPS ships them to your address. Delivery typically runs 2–5 business days via USPS Ground Advantage — bulk orders can run longer during peak season. No business verification, no account approval — anyone with a U.S. address can order.
Pick them up at any Post Office. Smaller branches stock the flat-rate sizes most reliably; specialty boxes (shoe box, cube, tube) are easier to find online. Counter staff will hand them over no questions asked, and many locations also keep Priority Mail tape on hand.
The free boxes program covers Priority Mail and Priority Mail Express only. Boxes ordered from the USPS store come pre-printed with the service branding, which is what defines the restriction in the next section.
Which USPS services get free packaging?
Free boxes are tied to specific USPS service tiers. They're available for Priority Mail and Priority Mail Express only — both of which are USPS's faster, pricier parcel services. Every other USPS service, including the cheaper options most small businesses lean on, requires you to bring your own packaging.
| USPS service | Typical use | Free packaging from USPS? |
|---|---|---|
| Priority Mail | 1–3 day delivery, parcels up to 70 lb | Yes |
| Priority Mail Express | Overnight or 2-day delivery, parcels up to 70 lb | Yes |
| USPS Ground Advantage | 2–5 day delivery, parcels up to 70 lb — often the cheapest postage for packages under 1 lb | No |
| Media Mail | Books, educational materials, recorded media | No |
| First-Class Mail (letters and flats) | Letters, postcards, small flats — not for parcels | No |
| Parcel Select | Bulk-discounted lightweight parcels (business mailers) | No |
The trade-off in plain English: "Free boxes" only comes with the more expensive USPS services. For packages under a pound traveling short distances, Ground Advantage postage is usually cheaper than Priority Mail — and that postage gap can easily exceed what you'd spend on a corrugated box from Amazon or Uline. Pick the cheapest service that meets your delivery and weight needs first, then choose the right box.
Every free Priority Mail box and envelope (with dimensions)
Priority Mail packaging breaks into two groups: Flat Rate containers (the price is set by the box size, not weight) and regular Priority Mail containers (you pay by weight and zone). All are free.
Priority Mail Flat Rate boxes
| Box | Outer dimensions | Inner dimensions |
|---|---|---|
| Small Flat Rate Box | 8 11/16" × 5 7/16" × 1 3/4" | 8 5/8" × 5 3/8" × 1 5/8" |
| Medium Flat Rate Box (top-loading) | 11 1/4" × 8 3/4" × 6" | 11" × 8 1/2" × 5 1/2" |
| Medium Flat Rate Box (side-loading) | 14 1/8" × 12" × 3 1/2" | ~13 3/4" × 11 3/4" × 3 1/4" |
| Large Flat Rate Box | 12 1/4" × 12" × 6" | 12" × 11 3/4" × 5 1/2" |
| APO/FPO/DPO Flat Rate Box | 12 1/4" × 12" × 6" | — |
For current Flat Rate postage prices and when Flat Rate actually beats weight-based, see the USPS Flat Rate boxes guide.
Priority Mail regular boxes (weight-based)
| Box | Outer dimensions |
|---|---|
| Priority Mail Small Box | 9 7/16" × 6 7/16" × 2 3/16" |
| Priority Mail Medium Cube-Shaped Box | 7 1/4" × 7 1/4" × 6 1/2" |
| Priority Mail Large Box (Box 7) | 12 1/4" × 12" × 8 1/2" |
| Priority Mail Side-Loading Medium Box | 13 11/16" × 12" × 2 7/8" |
| Priority Mail Side-Loading Large Box | 15" × 12" × 3 1/8" |
| Priority Mail Shoe Box | 14 7/8" × 5 1/4" × 7 3/8" |
Priority Mail envelopes
| Envelope | Dimensions |
|---|---|
| Flat Rate Envelope | 12 1/2" × 9 1/2" |
| Flat Rate Padded Envelope | 12 1/2" × 9 1/2" |
| Flat Rate Legal Envelope | 15" × 9 1/2" |
| Window Flat Rate Envelope | 12 1/2" × 9 1/2" |
| Priority Mail Poly Envelope (EP14) | 15" × 11 5/8" |
The Gift Card Flat Rate Envelope and Board Game Flat Rate Box are both discontinued. Regional Rate Boxes A and B were discontinued January 22, 2023 — if you still have a few in the back of your warehouse, they now ship at standard Priority Mail weight-based rates.
Free Priority Mail Express packaging
Priority Mail Express boxes and envelopes are free in the same way Priority Mail boxes are — order online or pick up at a Post Office. Inventory is narrower because Express is a lower-volume service.
| Container | Outer dimensions |
|---|---|
| Priority Mail Express Medium Box (Box 1) | 11 3/4" × 8 3/4" × 5 3/4" |
| Priority Mail Express Side-Loading Box | 15" × 12" × 3 1/8" |
| Priority Mail Express Flat Rate Envelope | 12 1/2" × 9 1/2" |
| Priority Mail Express Flat Rate Padded Envelope | 12 1/2" × 9 1/2" |
| Priority Mail Express Flat Rate Legal Envelope | 15" × 9 1/2" |
| Priority Mail / Express Dual-Use Tube | 25 9/16" × 6" × 5 1/4" |
The tube is dual-use — it ships under either Priority Mail or Priority Mail Express depending on the label you print.
If you're deciding between the two services, the Priority Mail vs. Priority Mail Express breakdown covers when the speed upgrade is worth the price.
Other free supplies: labels, forms, customs pouches
Boxes and envelopes get the attention, but USPS also gives away the paperwork and labeling supplies you need to ship:
- Priority Mail Address Labels (Label 228) — packs of 10 self-adhesive labels you can stick on your own boxes for Priority Mail. Max 50 packs per online order; call 1-800-610-8734 for higher volumes.
- Priority Mail Labels — rolls of 250.
- Priority Mail Express Outside Shipment Labels — packs of 10.
- Certified Mail and Registered Mail labels — rolls of 600 each.
- Collect on Delivery (COD) forms — packs of 10.
- Domestic Return Receipt forms — packs of 10.
- Small Customs Declaration Form Pouches — packs of 10, for international Priority Mail shipments.
Customs forms (PS Form 2976 and 2976-A) are available free at any Post Office or generated automatically when you print an international label through any shipping platform.
What USPS does not provide for free: corrugated boxes for Ground Advantage, plain unbranded boxes, poly mailers for non-Priority shipments, bubble mailers in bulk, or void fill (kraft paper, air pillows). Tape is sometimes available at the counter but isn't shipped from store.usps.com.
What happens if you use a Priority Mail box on Ground Advantage
USPS-provided Priority-branded packaging is restricted to Priority Mail and Priority Mail Express. If you ship one of those boxes under a cheaper service like Ground Advantage, USPS catches the mismatch through its Automated Package Verification (APV) system — and upcharges your postage to the full Priority Mail rate.
In practice that means:
- A Priority Mail Flat Rate box with a Ground Advantage label gets upcharged to what the Priority Mail Flat Rate postage would have been — wiping out the cheaper Ground Advantage rate.
- A Priority Mail Express padded envelope with a Priority Mail label is fine (same family, treated as standard Priority Mail).
- Plain, unbranded boxes you bought yourself are always fine on any service.
- Removing or covering the USPS branding to disguise the box is prohibited and can still trigger an adjustment when detected.
For sellers running mixed service portfolios, the practical fix is the cheapest one: order a stack of plain corrugated boxes for Ground Advantage and Media Mail shipments, and keep the free Priority Mail boxes for Priority labels. The APV upcharge wipes out any "free box" savings on the very first misuse.
What changed in 2025–2026: Tyvek to poly, rate increase
A few smaller changes worth knowing about:
Tyvek envelopes are being replaced with poly plastic. Starting November 15, 2025, three envelope types (Priority Mail EP14, Priority Mail Express EP13C, and the Priority Mail Mili-Pac) are transitioning from Tyvek to a poly material. The transition runs through the end of 2025; during that window you may receive either material depending on which inventory ships from your local distribution center. Performance is comparable (both are tear-resistant and water-resistant). USPS says the switch lets them increase recycled content in packaging materials.
Priority Mail postage went up twice in 2026. USPS raised Priority Mail rates by an average of 6.6% on January 18, 2026, then layered a time-limited adjustment of roughly 8% on top that took effect April 26, 2026 and runs through January 17, 2027. Combined, postage on most Priority Mail services is about 14–15% higher than late 2025. Boxes are still free; postage is the variable cost. The full 2026 Priority Mail breakdown lives in the Flat Rate boxes guide.
How much you save by using free boxes
Before the headline number: the savings only apply if Priority Mail or Priority Mail Express was already the right service for your shipment. If Ground Advantage would have been cheaper postage with your own box, the math flips and free boxes can cost you more overall. Pick the service first, then the box.
When Priority Mail is the right service — typically anything over a pound or going coast-to-coast — the packaging savings are real: corrugated boxes from third-party suppliers run roughly $1.20 to $2.50 each at small-business volumes.
Scenario: a small business shipping 100 Priority Mail packages a month using a ~12" × 12" × 6" box (the Large Flat Rate size, or roughly its weight-based equivalent).
| Source | Box | Per-box cost | Annual box spend (1,200 boxes) |
|---|---|---|---|
| USPS Priority Mail Large Flat Rate | 12 1/4" × 12" × 6" | $0.00 | $0 |
| Uline (12" × 12" × 6", bundle of 25) | S-4122 | $1.23 | $1,476 |
| Amazon (12" × 9" × 6", mid-range 25-pack) | varies | ~$1.20 | $1,440 |
| Home Depot (16" × 12" × 12" moving box) | varies | $1.78 | $2,136 |
| U-Haul (18" × 18" × 16" medium) | varies | $2.04 | $2,448 |
| Custom-printed (Packlane, 250-unit run) | 12" × 12" × 12" | $6.84 | $8,208 |
Prices reflect May 2026 retail and exclude tape, labels, and void fill — which add roughly $0.10 to $0.65 per shipment across every option, including free USPS boxes.
The headline math: a Priority-Mail-heavy seller saves $1,400 to $2,700 a year on packaging by using free USPS boxes instead of buying plain corrugated from Uline or U-Haul. A seller who would otherwise go branded with Packlane saves closer to $8,000, but that's not a fair comparison — Packlane buyers are paying for the brand experience, not the cardboard.
The break-even math for when Priority Mail beats Ground Advantage on total cost is in the USPS Flat Rate boxes guide — section: "Is USPS Flat Rate Shipping Worth It?"
Are UPS and FedEx boxes also free?
Yes, with the same kind of service restrictions USPS has.
FedEx provides free packaging for FedEx Express services (FedEx One Rate, FedEx Standard Overnight, FedEx 2Day, FedEx International). Boxes, padded envelopes, tubes, and Pak envelopes are all free when used with an Express label. Ground services require your own packaging.
UPS provides free packaging for UPS Express services (UPS Next Day Air, UPS 2nd Day Air, UPS Worldwide Express), though ordering free supplies requires a UPS account and access can depend on shipping activity or account standing. UPS Ground requires your own boxes, with the exception of UPS-branded Express envelopes that can be used on Worldwide Saver shipments.
The structural pattern across all three carriers is the same: free packaging is bundled with the higher-priced express tiers as a customer-acquisition perk, and ground services require you to supply the box. If you ship across multiple carriers, the domestic carrier rate comparison covers when each one actually wins on total landed cost.
Save more on Priority Mail with Shippo
Free boxes only address the packaging line. Postage is the bigger cost.
Shippo gives every account access to the same commercial Priority Mail and Priority Mail Express rates the major shipping platforms use — typically 10 to 15 percent below the post office counter price (actual savings vary by service, weight, and zone). There's no monthly minimum, no setup fee, and no contract. You can sign up, connect your store or upload a CSV, and start printing labels in the same session.
If you also ship UPS, FedEx, or DHL, Shippo rate-shops across 40+ carriers in one call so you're not toggling between five carrier websites to compare prices. See live rates in the calculator or start a free account.
Frequently asked questions
Can you get free boxes from USPS? Yes, but only if you're shipping Priority Mail or Priority Mail Express. USPS provides free boxes, envelopes, tubes, and labels for those two services at store.usps.com and any Post Office. The cheaper services (Ground Advantage, Media Mail, First-Class Mail, and Parcel Select) do not include free packaging — you have to buy your own.
Which USPS service is cheapest if I bring my own box? USPS Ground Advantage is typically the cheapest service for parcels under 1 lb traveling short zones. It replaced First-Class Package Service in 2023 and covers anything up to 70 lb in 2–5 business days. Priority Mail wins on speed (1–3 days) and on heavier packages going long distances. The full break-even comparison is in the USPS Flat Rate boxes guide.
How many free USPS boxes can I order at one time? Most boxes come in packs of 10 or 25, with no hard cap on the number of packs per order. Per-product limits exist on some items — Priority Mail Address Labels (Label 228), for example, are capped at 50 packs per online order. Call 1-800-610-8734 for higher volumes.
How long does it take to receive free USPS boxes? Plan for 2–5 business days. USPS ships free supplies via Ground Advantage. Bulk orders for high-volume sellers can take longer during peak season.
Can I use Priority Mail boxes for Ground Advantage? No. USPS's Automated Package Verification system detects the mismatch and upcharges your postage to the full Priority Mail rate — wiping out any savings from the cheaper service. Use plain unbranded boxes for Ground Advantage.
Do USPS boxes include free tape and void fill? No. USPS provides the box only. Tape is sometimes available at the Post Office counter but isn't shipped from store.usps.com. Bubble wrap, kraft paper, and air pillows are on the seller.
Are USPS Flat Rate boxes free? Yes — both the boxes and the padded envelopes are free. You pay only the Flat Rate postage, which is set by box size and starts at $13.66 (Small) as of April 26, 2026. The full 2026 price table is in the Flat Rate boxes guide.
Can I order free boxes for a residential address? Yes. USPS doesn't gate free supply orders by business type — anyone with a U.S. delivery address can order, in any quantity.
Are FedEx and UPS boxes free? Yes, but only when used with their Express service tiers (FedEx Express, UPS Next Day Air / 2nd Day Air). Ground services across both carriers require your own packaging.
Looking for a multi-carrier shipping platform?
With Shippo, shipping is as easy as it should be.
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