Priority Mail is a versatile, efficient, and affordable service. Delivery is estimated between 1-3 days.
Priority Mail rates are based on parcel weight, dimensions or packaging, and distance, as well as rate class.
When a custom package is used, parcel weight and dimensions are used to determine postage costs. Costs increase as weight and dimensions increase.
Postage costs also increase as the distance increases. USPS uses Zones to measure the distance a domestic shipment must travel, ranging from Zone 1 (local) to Zone 9 (very far away). Calculate your zone using the USPS ® Dynamic Zone Map.
In contrast, Flat Rate services require specially marked boxes and envelopes that receive one rate, regardless of distance or weight. In most cases, Flat Rate packages are the lowest cost option, if items fit within the box. USPS provides packaging at no cost.
Retail pricing is offered directly from the USPS at Post Office retail locations or USPS.com. It does not include discounts on postage prices like those received via ShippingEasy.
USPS has added Nonstandard Fees & Dimensional Noncompliance Fees for oversized packages or packages that have been labeled with incorrect dimensions effective April 2022. These surcharges will only apply to domestic residential and commercial addresses.
Flat Rate packages and Regional Rate packages are not applicable.
Compare with Priority Mail | Retail
USPS provides a multitude of services and rate classes. Check out these similar services and rates to see how they compare: