El Sobrante CA ZIP Code
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El Sobrante city is located in California State, Contra Costa County and has a unique zip code assigned by the US Postal Service Office.
You can search for the El Sobrante CA zip code by its streets and block numbers if we have some of the El Sobrante streets loaded in our website
El Sobrante Area Code is 510 and Time Zone is Pacific (GMT -08:00).
El Sobrante Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the El Sobrante City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the El Sobrante ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in El Sobrante, California.
The El Sobrante Zip Code is 94803, 94820.
If you want to send a mail to El Sobrante City, you should use the 94803, 94820 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded El Sobrante 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 94803, 94820 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a El Sobrante 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.