Williams CA ZIP Code
Williams city is located in California State, Colusa County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Williams CA zip code by its streets and block numbers if we have some of the Williams streets loaded in our website
Williams Area Code is 530 and Time Zone is Pacific (GMT -08:00).
Williams Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Williams City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Williams ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Williams, California.
The Williams Zip Code is 95987.
If you want to send a mail to Williams City, you should use the 95987 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Williams 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 95987 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Williams 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.