Which charts are used to calculate PME, PM, and USPS Retail Ground Prices?

Zone charts are used to calculate prices for the various mailing services, including PME (Priority Mail Express), PM (Priority Mail), and USPS Retail Ground. These charts take into account the zones which are determined by the distance the package is traveling. The U.S. Postal Service (USPS) divides the country into specific zones based on the origin and destination of the mail piece.

When determining the rates for these services, the zone in which the package will be shipped plays a critical role alongside the service type being utilized. Each zone corresponds to a specific price tier, which reflects the distance and the cost of transportation involved. This method ensures that the pricing remains consistent and fair for all customers, based on their location relative to where their package is being sent.

Weight, distance, and volume charts are important in their own right but do not directly correlate to the zone-based pricing structure implemented for these specific services. Therefore, understanding the significance of zone charts is crucial for accurately determining mailing costs within the USPS system.