Us Zip Code 95%

The U.S. is divided into 10 regions, numbered 0 to 9. They begin at 0 in the Northeast (e.g., New England, New Jersey) and increase toward 9 in the far West (e.g., California, Washington).

These specify a local post office, a specific neighborhood, or a delivery zone within that SCF's jurisdiction. The ZIP+4 Extension us zip code

These identify a Sectional Center Facility (SCF) , a central hub where mail is sorted for a specific sub-region or large city. These specify a local post office, a specific

The five-digit code is designed as a narrowing geographic funnel, with each digit moving from a broad region to a specific delivery point: Introduced on July 1, 1963, the system replaced

A (Zone Improvement Plan) is a numeric postal code system used by the United States Postal Service (USPS) to organize and expedite mail delivery. Introduced on July 1, 1963, the system replaced a simpler two-digit "city zone" model to handle a massive postwar surge in mail volume. How a ZIP Code is Structured