Rio Oso CA ZIP Code
Rio Oso city is located in California State, Sutter County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Rio Oso CA zip code by its streets and block numbers if we have some of the Rio Oso streets loaded in our website
Rio Oso Area Code is 530/916 and Time Zone is Pacific (GMT -08:00).
Rio Oso Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Rio Oso City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Rio Oso ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Rio Oso, California.
The Rio Oso Zip Code is 95674.
If you want to send a mail to Rio Oso City, you should use the 95674 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Rio Oso 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 95674 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Rio Oso 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.