Koyuk is a city located in Nome County Alaska. With a 2020 population of 363, it is the 76th largest city in Alaska and the 14621st largest city in the United States . Koyuk is currently declining at a rate of -0.55% annually but its population has increased by 9.34% since the most recent census, which recorded a population of 332 in 2010. Koyuk reached it's highest population of in . Spanning over 5 miles, Koyuk has a population density of 71 people per square mile.
The average household income in Koyuk is $42,524 with a poverty rate of 37.37%. The median rental costs in recent years comes to $610 per month, and the median house value is $88,800. The median age in Koyuk is 24.3 years, 22.5 years for males, and 24.8 years for females.