Upper Lake CA ZIP Code
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Upper Lake city is located in California State, Lake County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Upper Lake CA zip code by its streets and block numbers if we have some of the Upper Lake streets loaded in our website
Upper Lake Area Code is 707 and Time Zone is Pacific (GMT -08:00).
Upper Lake Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Upper Lake City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Upper Lake ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Upper Lake, California.
The Upper Lake Zip Code is 95485.
If you want to send a mail to Upper Lake City, you should use the 95485 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Upper Lake 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 95485 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Upper Lake 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.