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According to an innovation, first three digits in a five-digit ZIP code corresponded to number of one or another sectional centre facility on sorting of the items of mail which were flown down from post offices which have been attributed to this sorting point. Last two digits meant post office number where it was necessary to direct correspondence and in case of big cities coincided with former number of post district. As a result the address began to look in such way: Mr. Paul Jones 3256 Epiphenomenal Avenue Minneapolis 55416, MinnesotaGovernment agencies of the USA have the separate five-digits and nine-digits ZIP codes which are not providing other users of post services in a post zone with the given index.ZIP code data is an integral part of dealer/store locator software on many web sites, especially brick-and-click websites. This software processes a user-input ZIP code and returns a list of store or business locations, usually in order of increasing distance from the center of the input ZIP code. As the ZIP system is confined to the U.S. Postal network, websites that require ZIP codes cannot register customers outside the U.S.