Zip-Codes.com - Data base of US/Canadian zip codes, maps and boundary data

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Zip Code Database List - U.S. Zip Code Data Map - US Postal Code Demographics Database Listing.

Description

What is a ZIP Code?

A ZIP code is a numbering system with separate code numbers for all cities in the United States. Visual example:5 digit ZIP code maps illustrate the various zip code states, towns, and counties in the U.S..

On April 30, 1963, Postmaster General John A. Gronouski announced that the ZIP Code would begin on July 1, 1963. The United States Post Office Department introduced the Zone Improvement Plan (ZIP) Code, a coding system that assigned codes on maps to all addresses in the country.

In 1943 the United States Post Office Department divided cities into zones to assist in speeding sorting and mail delivery. By July 1963, a five-digit zip code had been assigned to every address throughout the United States map.

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Mount Kisco NY 10549 US

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