Signal Hill CA ZIP Code
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Signal Hill city is located in California State, Los Angeles County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Signal Hill CA zip code by its streets and block numbers if we have some of the Signal Hill streets loaded in our website
Signal Hill Area Code is 562 and Time Zone is Pacific (GMT -08:00).
Signal Hill Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Signal Hill City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Signal Hill ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Signal Hill, California.
The Signal Hill Zip Code is 90755.
If you want to send a mail to Signal Hill City, you should use the 90755 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Signal Hill 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 90755 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Signal Hill 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.