Piedmont CA ZIP Code
Piedmont city is located in California State, Alameda County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Piedmont CA zip code by its streets and block numbers if we have some of the Piedmont streets loaded in our website
Piedmont Area Code is 510/415/925 and Time Zone is Pacific (GMT -08:00).
Piedmont Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Piedmont City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Piedmont ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Piedmont, California.
The Piedmont Zip Code is 94620.
If you want to send a mail to Piedmont City, you should use the 94620 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Piedmont 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 94620 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Piedmont 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.