The USPS uses "zones" to measure the actual distance a domestic shipment 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.
Zones only apply to USPS domestic services. If a weight- or dimensional-based service is selected, then the zone will factor into the overall cost of the service.
- Priority Mail: See USPS rate tables to determine shipping cost between zone
- Priority Mail Express: See USPS rate tables to determine shipping cost between zone.
- Priority Mail Regional Rate: Zoned service that uses different packages to save you money. Learn more.
- First-Class Package Service: Available only for packages less than 1 lb. Learn more.
Finding the zone for a shipment:
USPS provides a detailed breakdown of zones based on specific sets of zip codes. Go to USPS' look up tool.
Endicia has a dynamic map illustrating zones across the country based on your zip code. Go to Endicia's zone map.
Some USPS domestic services are exempt from zone-based pricing.
- Flat Rate package types: Available for packages up to 70 lbs. Learn more.
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