Koyukuk AK ZIP Code
Koyukuk city is located in Alaska State, Yukon Koyukuk County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Koyukuk AK zip code by its streets and block numbers if we have some of the Koyukuk streets loaded in our website
Koyukuk Area Code is 907 and Time Zone is Alaska (GMT -09:00).
Koyukuk Zip Code - Alaska
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Koyukuk City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Koyukuk ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Koyukuk, Alaska.
The Koyukuk Zip Code is 99754.
If you want to send a mail to Koyukuk City, you should use the 99754 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Koyukuk 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 99754 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Koyukuk 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 Alaska.