Koyukuk
- County:
- Yukon-Koyukuk Census Area
- County Seat:
- No
- Area (mi²):
- 5.745
- State:
- Alaska
Koyukuk is a city located in Yukon-Koyukuk Census Area, Alaska. Koyukuk has a 2026 population of 93. Koyukuk is currently declining at a rate of -1.06% annually and its population has decreased by -4.12% since the most recent census, which recorded a population of 97 in 2020.
The median age in Koyukuk is 47.3 years: 0 years for males, and 0 years for females. For every 100 females there are 81.3 males.