Complete USPS Shipping Guide 2025
Everything you need to know about shipping packages with USPS. From packaging and labeling to choosing the right service and getting the best rates.
Getting Started with USPS Shipping
Shipping with USPS is straightforward once you know the basics. Here's the process at a glance:
Package your item
Use a sturdy box with cushioning material. Seal all seams with packing tape.
Measure and weigh
Measure length, width, and height. Weigh the package including all packaging materials.
Choose a service
Select Priority Mail for speed, Ground Advantage for value, or Express for guaranteed delivery.
Create your label
Print a label online at usps.com, through a shipping platform, or at the post office.
Drop off or schedule pickup
Drop at any post office, blue collection box, or schedule free pickup for Priority Mail.
How Do I Package My USPS Shipment?
To package a USPS shipment, use a sturdy box with 2-3 inches of cushioning around your item. Seal all seams with packing tape (not masking tape). Remove or cover old labels and barcodes. Include a copy of the shipping address inside the box as backup.
Do
- Use a new or sturdy box
- Add 2-3 inches of cushioning
- Tape all seams with packing tape
- Include address inside the box
- Remove old labels and barcodes
Don't
- Use damaged or worn boxes
- Over-pack (causes bursting)
- Use masking or duct tape alone
- Leave items loose inside
- Wrap with brown paper (tears)
Free USPS Supplies
USPS provides free Priority Mail boxes, envelopes, and tape at usps.com/store. Flat Rate boxes are especially useful—ship anything that fits for one price.
Measuring and Weighing Your Package
Accurate measurements ensure you pay the correct postage and avoid surcharges.
Dimensions
Measure length (longest side), width, and height in inches. Round up to the nearest inch.
Weight
Weigh the complete package including all packaging materials. Round up to the nearest ounce.
USPS Size Limits
- Maximum weight: 70 lbs
- Maximum size: Length + Girth ≤ 130 inches
- Girth formula: 2 × (Width + Height)
- Minimum size: 6" × 3" × 0.25"
How Do I Choose the Right USPS Service?
Choose USPS service based on speed, cost, and package requirements. Use Priority Mail Express (1-2 days) for urgent guaranteed delivery. Priority Mail (1-3 days) for fast shipping with tracking and insurance. Ground Advantage (2-5 days) for best value. Media Mail (2-8 days) for books only.
Creating Your Shipping Label
You can create USPS labels in several ways:
Online at USPS.com (Recommended)
Save 5-10% on postage by printing labels online. Pay with credit card, debit, or PayPal. Get tracking automatically and schedule free pickup.
At the Post Office
Bring your package to any Post Office location. Staff will weigh, measure, and create your label. Pay retail rates.
Third-Party Platforms
Services like Pirate Ship, Shippo, or ShipStation offer commercial pricing (even for individuals) and batch shipping features.
Where Can I Drop Off USPS Packages?
Drop off USPS packages at any Post Office, blue collection boxes, or USPS-approved retail locations. You can also schedule free Package Pickup for Priority Mail at usps.com—request by 2 AM for same-day pickup from your home or business.
Post Office
Drop off at any Post Office location during business hours. No appointment needed.
Blue Collection Boxes
For packages that fit through the slot. Available 24/7. Check pickup times on the box.
Free Package Pickup
Schedule free pickup for Priority Mail at usps.com. Request by 2 AM for same-day pickup.
USPS Retail Locations
Many grocery stores, pharmacies, and office supply stores accept USPS packages.
Pro Tips for USPS Shipping
- Print labels online to save money—retail counter prices are higher
- Use Flat Rate boxes for heavy items going long distances
- Order free Priority Mail supplies at usps.com
- Ship early in the week to avoid weekend processing delays
- Add insurance for valuable items beyond the included coverage
- Use Click-N-Ship to avoid Post Office lines
- Take photos of valuable items before shipping for insurance claims
Frequently Asked Questions
How do I ship a package with USPS?
To ship with USPS: 1) Package your item securely, 2) Measure and weigh the package, 3) Choose a mail class (Priority Mail, Ground Advantage, etc.), 4) Print a label online or at the post office, 5) Drop off at USPS or schedule a pickup.
Can I schedule a free USPS pickup?
Yes, USPS offers free Package Pickup for Priority Mail and Priority Mail Express. Schedule online at usps.com by 2 AM for same-day pickup. Your carrier will pick up packages during regular mail delivery.
What size box can I ship USPS?
USPS accepts packages with maximum combined length plus girth (distance around the thickest part) of 130 inches. Maximum weight is 70 lbs. Minimum size is 6 inches long, 3 inches high, and 0.25 inches thick.
Where can I drop off USPS packages?
Drop off USPS packages at: Post Office locations, USPS blue collection boxes (small packages only), USPS-approved retail locations, or schedule a free pickup from your home or business.