first class mail zones

first class mail zones refer to the geographic regions that determine the cost of sending a package using USPS First-Class Mail. USPS divides the U.S. into different zones, and the price for First-Class Mail depends on the distance between the origin and destination. Zone 1 represents the closest distance, and the prices increase as the distance to the destination grows. Understanding these zones is important for accurately calculating shipping costs and for determining expected delivery times. USPS provides a zone chart for customers to reference when sending packages via First-Class Mail.