Koyukuk, AK is a city located in Yukon Koyukuk County, Alaska and has a land area of 5.75 square miles (14.89 km2). The water area for the city is 0.10 square miles or 0.26 km2. There is one unique zip code in Koyukuk, Alaska and it is 99754. The area code(s) for Koyukuk is 907.
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