Koyuk is a city located in Alaska. With a 2020 population of 371, it is the 77th largest city in Alaska and the 14540th largest city in the United States. Koyuk is currently declining at a rate of 0.00% annually and its population has increased by 11.75% since the most recent census, which recorded a population of 332 in 2010. Koyuk reached it's highest population of 371 in 2018. Spanning over 5 miles, Koyuk has a population density of 73 people per square mile.
The average household income in Koyuk is $42,218 with a poverty rate of 41.13%. The median rental costs in recent years comes to $613 per month, and the median house value is $103,600. The median age in Koyuk is 21.5 years, 19.7 years for males, and 22.8 years for females. For every 100 females there are 110.1 males.