Diamond Bar CA ZIP Code
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Diamond Bar city is located in California State, Los Angeles County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Diamond Bar CA zip code by its streets and block numbers if we have some of the Diamond Bar streets loaded in our website
Diamond Bar Area Code is 909 and Time Zone is Pacific (GMT -08:00).
Diamond Bar Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Diamond Bar City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Diamond Bar ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Diamond Bar, California.
The Diamond Bar Zip Code is 91765.
If you want to send a mail to Diamond Bar City, you should use the 91765 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Diamond Bar 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 91765 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Diamond Bar 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 California.