Number of Zip Codes in US

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How many zip codes are there in the US?

42,000.

Currently there are 42,000 zip codes in the United States. This is according to the Zip Code FAQs published by the United States Postal Service.  The US zip code consists of 9 digits, where the first 5 digits indicate the post office facility or delivery area of the recipient, while the last 4 digits identify a segment of the post delivery area.

 

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