Postal codes or in other words zip codes and postcodes are series of digits or letters (including both sometimes), included in a postal address, that help postal services determine where mail has to be delivered to. They simplify the task of bringing delivery items (letters, packages) to it’s final destination. Countries throughout the globe use postal codes, and even the systems and formats differ, the main purpose is that they all make item sorting and delivery job easier.
Postal codes mean the extent of delivery area jurisdictions. Every delivery point within the same jurisdiction is one whole postal code, and anything beyond those dividing lines are counted as a different code. Sometimes postal codes are assigned to particular geographical areas or administrative boundaries. In some cases, they are attached to a specific institution or organization (such as government agencies and large commercial companies, which receive massive volumes of mail) or even to a single delivery point. Altogehter, postal codes are closely tied to and heavily defined by where the postman (mail carrier) goes when delivering the mail.
In various countries postal code is also known as: ZIP (Zone Improvement Plan) code – United States, postcode – Britain and other certain countries, Eircode – Ireland, Pin (Postal Index Number) Code – India.
At present, according to Universal Postal Union, around 130 out of 190 countries are using postal codes as a part of their addressing systems.
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