Zip Codes

Six months after the implementation of ZIP codes in 1963, every address in the US had been assigned one.

Zip codes, also known as postal codes, are a system of numerical codes that are used by postal services to facilitate the delivery of mail and parcels to specific locations. The history of zip codes goes back to the early 20th century when the United States Postal Service (USPS) recognized the need for a more efficient mail delivery system.

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