Montrose CA ZIP Code
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Montrose 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 Montrose CA zip code by its streets and block numbers if we have some of the Montrose streets loaded in our website
Montrose Area Code is 818 and Time Zone is Pacific (GMT -08:00).
Montrose Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Montrose City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Montrose ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Montrose, California.
The Montrose Zip Code is 91020, 91021.
If you want to send a mail to Montrose City, you should use the 91020, 91021 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Montrose 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 91020, 91021 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Montrose 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.