Zip codes North Dakota Golden Valley
ZIP Codes are inherently discrete data, or point based data, as they are assigned only at the point of delivery, not the spaces in between the delivery points.To the beginning of 1960th years there was a need for more universal system of ZIP codes. On July, 1st, 1963 such new system has been accepted in a test mode in all territory of the USA. The "Father" of ZIP codes is Robert Moon, the worker of post department. Moon has offered new system of indexes in 1944 when he worked as the post inspector.In 1983 the Post service of the USA has started to use system of indexation ZIP + 4 which is based on the expanded ZIP code consisting of nine digits. Thus to already used five-digit ZIP code have been added (via a hyphen) four more digits which mean a local geographical segment in five-place area of delivery, for example, city quarter, a multiroom housing estate, the individual receiver (sender) of great amounts of mail or any division of the organisation (enterprise) for which the additional identifier facilitating sorting and delivery of correspondence is required.For calculation and check of the complete postal address and ZIP code, or a delivery point, there is a special technique and the software (Coding Accuracy Support System).ZIP Codes are inherently discrete data, or point based data, as they are assigned only at the point of delivery, not the spaces in between the delivery points.