What is definition postal code?

A postal code, also known as a postal or ZIP code, is a series of letters or digits placed in a postal address to help postal workers sort and deliver mail more quickly and efficiently. The code usually represents a geographic area or a group of houses, buildings, or businesses. Different countries and regions have different systems for assigning postal codes, but they all serve the same basic purpose of ensuring that mail is delivered accurately and on time. In some countries, postal codes are also used for other purposes, such as tracking packages or identifying the location of emergency services.