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The ZIP codes derived from a World War II zone program that divided large areas into smaller postal districts. What does "ZIP code" stand for? ĭescription: The "ZIP" in a ZIP code stands for "Zone Improvement Plan.".The main goal was to improve efficiency and accuracy of processing and sorting the mail, and. The ZIP code, (short for Zone Improvement Plan) was introduced on Jby the United States Postal Service to help efficiently deal with the growing number of businesses using direct mailing.The ZIP code was an extension of the two digit postal code that was already being used in major cities.
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#US ZIP CODE SEARCH PDF#
The complete list and database of 5-digit US postal codes is available for download in SQL, CSV, YAML, XML, MS Excel, HTML, and PDF formats.
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The first 3 digits of a ZIP code determine the central mail processing facility, also called sectional center facility or "sec center", that is used to process and sort mail. The map of the first digit of zip codes above shows they are assigned in order from the north east to the west coast. The first digit of a USA ZIP code generally represents a group of U.S.
#US ZIP CODE SEARCH FREE#
Free ZIP code map, zip code lookup, and zip code list.Cities by ZIP Code™ For more rapid delivery, please use the recommended or recognized city names whenever possible for this ZIP Code ™.