Pioneer CA ZIP Code
Pioneer city is located in California State, Amador County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Pioneer CA zip code by its streets and block numbers if we have some of the Pioneer streets loaded in our website
Pioneer Area Code is 209 and Time Zone is Pacific (GMT -08:00).
Pioneer Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Pioneer City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Pioneer ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Pioneer, California.
The Pioneer Zip Code is 95666.
If you want to send a mail to Pioneer City, you should use the 95666 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Pioneer 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 95666 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Pioneer 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.