Willow Creek CA ZIP Code
Willow Creek 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 Willow Creek CA zip code by its streets and block numbers if we have some of the Willow Creek streets loaded in our website
Willow Creek Area Code is 530 and Time Zone is Pacific (GMT -08:00).
Willow Creek Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Willow Creek City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Willow Creek ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Willow Creek, California.
The Willow Creek Zip Code is 95573.
If you want to send a mail to Willow Creek City, you should use the 95573 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Willow Creek 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 95573 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Willow Creek 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.