San Ysidro CA ZIP Code
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San Ysidro city is located in California State, San Diego County and has a unique zip code assigned by the US Postal Service Office.
You can search for the San Ysidro CA zip code by its streets and block numbers if we have some of the San Ysidro streets loaded in our website
San Ysidro Area Code is 619 and Time Zone is Pacific (GMT -08:00).
San Ysidro Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the San Ysidro City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the San Ysidro ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in San Ysidro, California.
The San Ysidro Zip Code is 92143, 92173.
If you want to send a mail to San Ysidro City, you should use the 92143, 92173 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded San Ysidro 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 92143, 92173 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a San Ysidro 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.