South San Francisco CA ZIP Code
South San Francisco 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 South San Francisco CA zip code by its streets and block numbers if we have some of the South San Francisco streets loaded in our website
South San Francisco Area Code is 650 and Time Zone is Pacific (GMT -08:00).
South San Francisco Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the South San Francisco City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the South San Francisco ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in South San Francisco, California.
The South San Francisco Zip Code is 94080, 94083.
If you want to send a mail to South San Francisco City, you should use the 94080, 94083 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded South San Francisco 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 94080, 94083 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a South San Francisco 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.