Petrolia CA ZIP Code
Petrolia 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 Petrolia CA zip code by its streets and block numbers if we have some of the Petrolia streets loaded in our website
Petrolia Area Code is 707 and Time Zone is Pacific (GMT -08:00).
Petrolia Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Petrolia City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Petrolia ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Petrolia, California.
The Petrolia Zip Code is 95558.
If you want to send a mail to Petrolia City, you should use the 95558 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Petrolia 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 95558 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Petrolia 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.