Nikolai, AK is a city located in Yukon Koyukuk County, Alaska and has a land area of 4,624.72 square miles (10.36 km2). The water area for the city is 17.63 square miles or 45.66 km2. There is one unique zip code in Nikolai, Alaska and it is 99691. The area code(s) for Nikolai is 907.
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