Shipping zones
A shipping zone is a distance band between the origin ZIP and the destination ZIP. Carriers use it as one input to postage. The same 2 lb box can cost more two states away than across town — not because the label is different, because the zone is.
What a zone actually is
USPS and UPS divide the country into numbered zones from your origin. Zone 1 or 2 is nearby. Higher numbers are farther. The map is not the same as driving miles — it is the carrier’s published grid from that origin.
Oshippy does not show a public zone-lookup table. Those charts go stale and still are not a price. When you compare shipping rates, the live quote already includes the zone for the two addresses you entered.
What zone does not tell you
- It does not pick the carrier. UPS and USPS can differ in the same lane.
- It does not include dimensional weight. A light, huge box can still bill on size. See how dimensional weight works.
- It does not include extras (signature, oversize) that appear only on some services.
How to use zone thinking without a chart
- Enter complete origin and destination addresses — a wrong ZIP is a wrong zone.
- Compare USPS and UPS for that pair. Do not reuse last month’s quote for a new destination.
- If you ship the same SKU nationwide, expect coastal destinations to price differently than a local drop.
Need billable weight first? Use the shipping calculator, then pull live rates.
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Frequently asked questions
Compare current shipping rates
Oshippy applies the real zone, weight, and size to live USPS and UPS quotes. No stale zone chart.