Yountville CA ZIP Code
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Yountville city is located in California State, Napa County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Yountville CA zip code by its streets and block numbers if we have some of the Yountville streets loaded in our website
Yountville Area Code is 707 and Time Zone is Pacific (GMT -08:00).
Yountville Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Yountville City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Yountville ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Yountville, California.
The Yountville Zip Code is 94599.
If you want to send a mail to Yountville City, you should use the 94599 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Yountville 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 94599 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Yountville 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.