Fort Knox KY ZIP Code
Fort Knox city is located in Kentucky State, Hardin County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Fort Knox KY zip code by its streets and block numbers if we have some of the Fort Knox streets loaded in our website
Fort Knox Area Code is 502 and Time Zone is Eastern (GMT -05:00).
Fort Knox Zip Code - Kentucky
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Fort Knox City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Fort Knox ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Fort Knox, Kentucky.
The Fort Knox Zip Code is 40121, 40122.
If you want to send a mail to Fort Knox City, you should use the 40121, 40122 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Fort Knox 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 40121, 40122 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Fort Knox 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 Kentucky.