Whitethorn CA ZIP Code
Whitethorn city is located in California State, Humboldt County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Whitethorn CA zip code by its streets and block numbers if we have some of the Whitethorn streets loaded in our website
Whitethorn Area Code is 707 and Time Zone is Pacific (GMT -08:00).
Whitethorn Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Whitethorn City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Whitethorn ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Whitethorn, California.
The Whitethorn Zip Code is 95589.
If you want to send a mail to Whitethorn City, you should use the 95589 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Whitethorn 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 95589 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Whitethorn 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.