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ZipCodePlusFour

type ZipCodePlusFour: Tagged<string, "ZipCodePlusFour">;

The extended ZIP code format includes the five-digit ZIP code followed by a hyphen and four additional digits. This extended format is used to provide more precise location information.

  • The first 3 digits of the ZIP code represent a specific central mail processing facility,
  • The last 2 digits of the ZIP code represent a specific post office or delivery area.
  • The four additional digits represent a specific delivery route within the ZIP code area.
                 90210-1234
                 \_/\ /\__/
                 /   |    \
 (State, City)_ /    |     \_ (Delivery Route)
                     |
               (Post Office)

Note that ZIP codes are not truly areas, but rather a group of deliverable addresses, which can and do change over time.

Title​

ZIP Code+4

See​

ZipCode for the standard ZIP code format.