Key Biscayne FL ZIP Code
Key Biscayne city is located in Florida State, Miami-dade County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Key Biscayne FL zip code by its streets and block numbers if we have some of the Key Biscayne streets loaded in our website
Key Biscayne Area Code is 305 and Time Zone is Eastern (GMT -05:00).
Key Biscayne Zip Code - Florida
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Key Biscayne City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Key Biscayne ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Key Biscayne, Florida.
The Key Biscayne Zip Code is 33149.
If you want to send a mail to Key Biscayne City, you should use the 33149 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Key Biscayne 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 33149 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Key Biscayne 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.