Napa CA ZIP Code
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Napa 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 Napa CA zip code by its streets and block numbers if we have some of the Napa streets loaded in our website
Napa Area Code is 707 and Time Zone is Pacific (GMT -08:00).
Napa Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Napa City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Napa ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Napa, California.
The Napa Zip Code is 94558, 94559, 94581.
If you want to send a mail to Napa City, you should use the 94558, 94559, 94581 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Napa 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 94558, 94559, 94581 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Napa 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.