Forest Knolls CA ZIP Code
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Forest Knolls city is located in California State, Marin County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Forest Knolls CA zip code by its streets and block numbers if we have some of the Forest Knolls streets loaded in our website
Forest Knolls Area Code is 415 and Time Zone is Pacific (GMT -08:00).
Forest Knolls Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Forest Knolls City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Forest Knolls ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Forest Knolls, California.
The Forest Knolls Zip Code is 94933.
If you want to send a mail to Forest Knolls City, you should use the 94933 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Forest Knolls 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 94933 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Forest Knolls 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.