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  2. ZIP Code - Wikipedia

    en.wikipedia.org/wiki/ZIP_code

    A ZIP Code (an acronym for Zone Improvement Plan [1]) 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 [2] (zipping along) when senders use the code in the postal address. Introduced on July 1, 1963, the basic format comprised five ...

  3. ZIP Code Tabulation Area - Wikipedia

    en.wikipedia.org/wiki/ZIP_Code_Tabulation_Area

    ZCTAs are generalized area representations of the United States Postal Service (USPS) ZIP code service areas, but are not the same as ZIP codes. Individual USPS ZIP codes can cross state, place, county, census tract, census block group and census block boundaries, so the Census Bureau asserts that "there is no correlation between ZIP codes and ...

  4. Postal address verification - Wikipedia

    en.wikipedia.org/wiki/Postal_address_verification

    Postal address verification (also known as address , address validation, address verification and CASS certification [1]) is the process used to check the validity and deliverability of a physical mailing address. According to the United States Postal Service, an address is valid (or mailable) if it is CASS-certified, meaning that it exists ...

  5. Geographic - National Center for Education Statistics (NCES)

    nces.ed.gov/programs/edge/Geographic/ZCTAAssignments

    ZCTAs are approximations of United States Postal Service (USPS) 5-digit ZIP Code service areas that the Census Bureau creates using census blocks to present statistical data from censuses and surveys. The ZCTA locale assignments are based on NCES locale boundaries and reflect the locale that accounts for the largest areal proportion of the ZCTA.

  6. Network distribution center - Wikipedia

    en.wikipedia.org/wiki/Network_Distribution_Center

    A network distribution center (NDC) was a highly mechanized mail processing plant of the United States Postal Service that distributed standard mail and package services in piece and bulk form. [1] The NDC network was dismantled in 2022-2023 by the USPS as part of Postmaster General Louis DeJoy ’s Delivering for America network ...

  7. List of ZIP Code prefixes - Wikipedia

    en.wikipedia.org/wiki/List_of_ZIP_Code_prefixes

    Each cell in this table contains a three-digit ZIP code prefix, the state where that ZIP code prefix is located, and the name of the United States Postal Service (USPS) Sectional Center Facility (SCF) that serves that ZIP code prefix, which may be in a different state. Each SCF may serve more than one three-digit ZIP code prefix.

  8. United States Postal Service - Wikipedia

    en.wikipedia.org/wiki/United_States_Postal_Service

    The United States Postal Service ( USPS ), also known as the Post Office, U.S. Mail, or Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the United States, its insular areas, and its associated states. It is one of the few government agencies ...

  9. Mr. ZIP - Wikipedia

    en.wikipedia.org/wiki/Mr._ZIP

    Mr. ZIP, informally "Zippy", is a cartoon character used in the 1960s by the United States Post Office Department, and later by its successor, the United States Postal Service, to encourage the general public to include the ZIP Code in all mailings.