Priority Mail Express Cost

“Except for Flat Rate Packaging (see 1.4), Priority Mail Express postage is charged for each addressed piece according to its weight and zone. The 0.5-pound price is charged for items up to 0.5 pound and items over 0.50 pound are rounded up to the next whole pound. For example, if a piece weighs 0.25 pound, the weight (postage) increment is 0.50 pound. Express all weights in decimal pounds rounded off to two decimal places.”

“Postal prices for certain subclasses of mail are based on the weight of the individual piece and the distance that the piece travels from origin to destination (i.e., the number of postal zones crossed). … The distance is measured from the centroid of the 3-digit ZIP Code area serving the origin Post Office to the centroid of the 3-digit ZIP Code area serving the destination Post Office.”

“Zones are defined as follows:
The Zone 1 price applies to pieces mailed within the same 3-digit origin/destination (O/D) pairs. The Zone 1 price also includes pieces mailed with different 3-digit O/D pairs, whose centroids are up to 50 miles in distance.
Zone 2 includes all units of area outside zone 1 lying in whole or in part within a radius of about 150 miles from the center of a given unit of area.
Zone 3 includes all units of area outside zone 2 lying in whole or in part within a radius of about 300 miles from the center of a given unit of area.
Zone 4 includes all units of area outside zone 3 lying in whole or in part within a radius of about 600 miles from the center of a given unit of area.
Zone 5 includes all units of area outside zone 4 lying in whole or in part within a radius of about 1,000 miles from the center of a given unit of area.
Zone 6 includes all units of area outside zone 5 lying in whole or in part within a radius of about 1,400 miles from the center of a given unit of area.
Zone 7 includes all units of area outside zone 6 lying in whole or in part within a radius of about 1,800 miles from the center of a given unit of area.
Zone 8 includes all units of area outside zone 7.
Zone 9 includes the destinations listed in DMM 2.2 (Republic of Palau, Federated States of Micronesia, and Republic of the Marshall Islands).”

“The USPS Official National Zone Chart Data Program is administered from the National Customer Support Center (NCSC) in Memphis, TN. Single-page zone charts for originating mail are available at no cost online at https://pe.usps.com.”

“Only USPS-produced Flat Rate Envelopes are eligible for the Flat Rate price, and only customers when using them are charged a flat rate, regardless of the domestic destination or actual weight (up to 70 pounds) of the mailpiece. Customers must only use USPS-produced Flat Rate Envelopes at the applicable Flat Rate Envelope price. Restrictions apply for using USPS-produced packaging (see 601.6.1).”

“Use USPS Priority Mail Express Flat Rate Envelopes and pay one price:
Pay the same price for mailpieces weighing up to 70 lbs going anywhere in the U.S.”

“Priority Mail Express is an expedited service for shipping any mailable matter, with a money-back guarantee, subject to the standards below.”

“Priority Mail Express offers delivery in 1, 2, or 3 delivery days depending on various factors, including the date on which the item is deemed accepted by the Postal Service, and based on the origin and destination ZIP Codes.”

“Delivery guaranteed for a Sunday or holiday is charged a premium fee (see Notice 123—Price List). Customers not desiring delivery on a Sunday or a holiday may avoid the premium by opting for guaranteed delivery on the subsequent delivery day.”

“For Sunday/Holiday delivery, add $12.50.”

“Parcels that exceed 22 inches but not greater than 30 inches in length, add $4.50. Parcels that exceed 30 inches in length, add $21.00. Parcels that exceed 2 cubic feet (3456 cubic inches), add $35.00.”

“Parcels that exceed one cubic foot (1,728 cubic inches) are charged based on the actual weight or the dimensional weight, whichever is greater (as calculated in DMM 113.1.3).”

“Postage for parcels addressed for delivery to zones 1–9 and exceeding 1 cubic foot (1,728 cubic inches) is based on the actual weight or the dimensional weight (as calculated in 1.3.2 or 1.3.3), whichever is greater.”

“If the result exceeds 1,728 cubic inches, divide the result by 139 and round up (see 604.7.0) to the next whole number to determine the dimensional weight in pounds. If the dimensional weight exceeds 70 pounds, the customer pays the 70-pound price.”