Ruby
- County:
- Yukon-Koyukuk Census Area
- County Seat:
- No
- Area (mi²):
- 7.025
- State:
- Alaska
Ruby is a city located in Yukon-Koyukuk Census Area, Alaska. Ruby has a 2026 population of 131. Ruby is currently declining at a rate of -0.76% annually and its population has decreased by -4.38% since the most recent census, which recorded a population of 137 in 2020.
The median age in Ruby is 50.6 years: 42.7 years for males, and 53.3 years for females. For every 100 females there are 132.4 males.