Zones are a tool used by USPS to measure the actual distance a package must travel.
Zones range from Zone 1 (local) to Zone 9 (very far away). A zone is determined by the "ship from" zip code as it relates to the "ship to" zip code. The farther a package must travel, the more zones it crosses, and the more it costs to ship it.
Endicia provides a dynamic map illustrating zones across the country based on your zip code. Go to Endicia's zone map.
USPS provides a detailed breakdown of zones based on specific sets of zip codes. Go to USPS' look up tool.
If a weight- or dimensional-based service is selected, then the zone will factor into the overall cost of the service.
Zoned services
Priority Mail Express and Priority Mail: See our rate tables to determine shipping cost between zone.
Priority Mail Regional Rate: Zoned service that uses different packages to save you money. Learn more.
Zone-exempt services
Flat Rate package types: Available for packages up to 70 lbs. Learn more.
First Class Package Service: Available only for packages less than 1 lb. Learn more.
Related articles:
Which Country Price Group does my international shipment qualify for?
What is Priority Mail Regional Rate shipping?
Best of Rules: Assign USPS Regional Rate Box to shipments with specific zones
What Canadian zone will be used for my Priority Mail International rate?
What is the most cost effective way to ship via USPS?
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