Postal zone is understood to be the set of numbers, figures or digits that describe a particular address, which allows the different postal entities to sort the correspondence by different areas or sectors. Breaking down completely the term postal zone we have that zone derives from the Latin "zone" which in turn comes from the Greek "ζώνη" which means "belt" or "belt"; on the other hand, the word postal comes from "posta" and this from the vulgar Latin "postum".
This series of figures, which can also have letters interleaved, makes it possible to identify a postal sector or region; whose purpose is to facilitate the process of distribution of correspondence, since instead of having the full destination address only the key of the letter or package is reviewed.
The postal zone system was implemented for the first time in Ukraine, when it was part of the USSR in 1932, but then stopped being used in 1939. Then in 1941 Germany resorted to this system, implementing it years later Argentina in 1958, United Kingdom in 1959, United States in 1963 and a year later Switzerland.
It is important to note that most countries have the correspondence service, but nevertheless in several countries they have not implemented this modality of the postal zone, which includes Ireland.
The postal zone may vary according to the country where you are, for example in countries such as the United States and Mexico they use a five-number code, unlike other countries that use 4 numbers.
