1963 : Non-Mandatory ZIP Codes for Entire Country Announced

When:
July 1, 2018 all-day
2018-07-01T00:00:00-04:00
2018-07-02T00:00:00-04:00

Mr. ZIP

On July 1, 1963, non-mandatory ZIP codes were announced for the whole country.

Sources :

ZIP Code History – A Brief History of the Development of the ZIP Code in the United States

Zip-a-Dee-Doo-Dah” – the ZIP Code is 50, Library of Congress Blog entry by Ellen Terrell, June 28, 2013.

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