term in Slovakia and the Czech Republic; PSC is an acronym for Postové smerovacie císlo (in Slovak) or Postovní smerovací císlo (in Czech), both meaning postal routing number.
* ZIP Code: The standard term in the United States and the Philippines; ZIP is an acronym for Zone Improvement Plan.

History

The development of postal codes happened first in large cities. Postal codes began with postal district numbers (or postal zone numbers)

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