Mililani HI ZIP Code
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Mililani city is located in Hawaii State, Honolulu County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Mililani HI zip code by its streets and block numbers if we have some of the Mililani streets loaded in our website
Mililani Area Code is 808 and Time Zone is Hawaii-Aleutian Islands (GMT -10:00).
Mililani Zip Code - Hawaii
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Mililani City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Mililani ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Mililani, Hawaii.
The Mililani Zip Code is 96789.
If you want to send a mail to Mililani City, you should use the 96789 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Mililani 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 96789 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Mililani 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 Hawaii.