Atherton CA ZIP Code

Atherton city is located in California State, San Mateo County and has a unique zip code assigned by the US Postal Service Office.

You can search for the Atherton CA zip code by its streets and block numbers if we have some of the Atherton streets loaded in our website

Atherton Area Code is 650 and Time Zone is Pacific (GMT -08:00).

Atherton Zip Code - California

The basic format consists of five decimal numerical digits assigned to the Atherton City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Atherton ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Atherton, California.

The Atherton Zip Code is 94027.

If you want to send a mail to Atherton City, you should use the 94027 Zip Code.

In 1983, the U.S. Postal Service introduced an expanded Atherton 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 94027 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Atherton 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.

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What is the Atherton Zip Code?

The Atherton Zip Code in California is 94027.

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Atherton, California -

Atherton ZIP Code Lookup

94027 Zip Code File:
Zip Code: 94027,
City: Atherton
Atherton Area Code: 650
Atherton, CA - Time Zone: Pacific (GMT -08:00)
County: San Mateo
City Alias: Menlo Park, Atherton
State: California
State Abb: CA

California Zip+4 - Nearby Atherton Cities

Cities near Atherton in California
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