Kupreanof
- County:
- Petersburg Borough
- County Seat:
- No
- Area (mi²):
- 3.02
- State:
- Alaska
Kupreanof is a city located in Petersburg Borough, Alaska. Kupreanof has a 2026 population of 19. Kupreanof is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 19 in 2020.
The median age in Kupreanof is 71.3 years: 0 years for males, and 0 years for females. For every 100 females there are 100.0 males.