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  2. ZIP Code - Wikipedia

    en.wikipedia.org/wiki/ZIP_code

    In 1983, the U.S. Postal Service introduced an expanded ZIP Code system that it named ZIP+4, often known as "plus-four codes", "add-on codes", or "add-ons". A ZIP+4 Code uses the basic five-digit code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a city block, a group of apartments, an ...

  3. 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.

  4. POSTNET - Wikipedia

    en.wikipedia.org/wiki/POSTNET

    POSTNET. POSTNET ( Post al N umeric E ncoding T echnique) is a barcode symbology used by the United States Postal Service to assist in directing mail. The ZIP Code or ZIP+4 code is encoded in half- and full-height bars. [ 1] Most often, the delivery point is added, usually being the last two digits of the address or PO box number.

  5. List of postal codes - Wikipedia

    en.wikipedia.org/wiki/List_of_postal_codes

    Known as the ZIP Code with five digits 99999* or the ZIP+4 Code with nine digits 99999-9999* (while the minimum requirement is the first five digits, the U.S. Postal Service encourages everyone to use all nine).

  6. List of U.S. state and territory abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._state_and...

    Codes and abbreviations for U.S. states, federal district, territories, and other regions. Codes: ISO. ISO 3166 codes ( 2-letter, 3-letter, and 3-digit codes from ISO 3166-1; 2+2-letter codes from ISO 3166-2 ) ANSI. 2-letter and 2-digit codes from the ANSI standard INCITS 38 :2009 (supersedes FIPS 5-2 ) USPS.

  7. Postal code - Wikipedia

    en.wikipedia.org/wiki/Postal_code

    A postal code (also known locally in various English-speaking countries throughout the world as a postcode, post code, PIN or ZIP Code) is a series of letters or digits or both, sometimes including spaces or punctuation, included in a postal address for the purpose of sorting mail . As of August 2021, the Universal Postal Union lists 160 ...

  8. ZIP Code Tabulation Area (ZCTA) Locale Assignments File ...

    nces.ed.gov/programs/edge/docs/EDGE_LOCALE16...

    The ZCTA Locale file is a table of NCES Locale assignments applied to each of the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs) included in the 2016 TIGER/Line boundaries. The assignments rely on 2016 NCES Locale boundaries and are based on the locale that accounts for the largest areal proportion of the ZCTA.

  9. Postal address verification - Wikipedia

    en.wikipedia.org/wiki/Postal_address_verification

    If the address is valid, it is assigned a ZIP+4 code something like this: 12344-5678, where the first five digits are the ZIP code and the trailing four digits are the delivery range. An address with a ZIP+4 code (or nine-digit ZIP code) is considered to be valid. In most cases, this means that the address is deliverable.