Black Diamond WA ZIP Code
Black Diamond city is located in Washington State, King County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Black Diamond WA zip code by its streets and block numbers if we have some of the Black Diamond streets loaded in our website
Black Diamond Area Code is 360 and Time Zone is Pacific (GMT -08:00).
Black Diamond Zip Code - Washington
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Black Diamond City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Black Diamond ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Black Diamond, Washington.
The Black Diamond Zip Code is 98010.
If you want to send a mail to Black Diamond City, you should use the 98010 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Black Diamond 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 98010 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Black Diamond 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 Washington.