Okanogan WA ZIP Code
Okanogan city is located in Washington State, Okanogan County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Okanogan WA zip code by its streets and block numbers if we have some of the Okanogan streets loaded in our website
Okanogan Area Code is 509 and Time Zone is Pacific (GMT -08:00).
Okanogan Zip Code - Washington
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Okanogan City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Okanogan ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Okanogan, Washington.
The Okanogan Zip Code is 98840.
If you want to send a mail to Okanogan City, you should use the 98840 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Okanogan 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 98840 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Okanogan 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.