1. History

    The early history and context of postal codes began with postal district/zone numbers. The
    For … 展开

    ZIP Code - Wikipedia

    • A ZIP Code (an acronym for Zone Improvement Plan ) is a system of postal codes used by the United States Postal Service (USPS). The term ZIP was chosen to suggest that the mail travels more efficiently and quickly (zipping along) when senders use the code in the postal address. Introduced on July 1, 1963, the basic format comprised five digits. In 1983, … 展开

    Structure and allocation

    ZIP Codes designate delivery points within the United States (and its territories).
    There are four types of ZIP Codes:
    • Unique: assigned to a single high-volume address
    • Post office box-only: used only for PO boxes at a gi… 展开

    Relationship with local government boundaries

    Each ZIP Code has one or more "postal city" names assigned to it. Since ZIP Code boundaries are based on the areas served by each physical post office, they often do not coincide with the boundaries of local government unit… 展开

    Other uses

    Delivery services other than the USPS, such as FedEx, United Parcel Service, and DHL, require a ZIP Code for optimal internal routing of a package.
    As of October 2019 , there are 41,702 ZIP Codes in the Uni… 展开

     
  1. List of ZIP Code prefixes - Wikipedia

  2. List of ZIP Code prefixes - Simple English Wikipedia, the free …

  3. List of postal codes - Wikipedia

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  5. The Untold Story of the ZIP Code - Office of Inspector …

    网页Learn how the ZIP Code was created, adopted, and enhanced by the Post Office Department and the Postal Service. Explore the benefits and challenges of combining ZIP Codes with geocodes and demographic …

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  7. ZIP code - Simple English Wikipedia, the free …

    网页Learn about the ZIP code system used by the United States Postal Service (USPS) to deliver mail more efficiently and quickly. Find out how ZIP codes are structured, allocated, and extended with ZIP + 4 codes.

  8. ZIP code - Wikiwand

  9. U.S. postal abbreviations - Simple English Wikipedia, …

    网页51 行 · This is a list of postal code abbreviations used by the United States Postal Service. They are used to help the postal service process mail. [1] In other contexts, such as newspaper articles, the traditional abbreviations …

  10. Free ZIP code map, zip code lookup, and zip code list

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