Key West FL ZIP Code
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Key West city is located in Florida State, Monroe County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Key West FL zip code by its streets and block numbers if we have some of the Key West streets loaded in our website
Key West Area Code is 305 and Time Zone is Eastern (GMT -05:00).
Key West Zip Code - Florida
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Key West City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Key West ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Key West, Florida.
The Key West Zip Code is 33040, 33041, 33045.
If you want to send a mail to Key West City, you should use the 33040, 33041, 33045 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Key West ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 33040, 33041, 33045 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Key West city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Florida.