Mentasta Lake is a CDP located in Copper River Census Area, Alaska. Mentasta Lake has a 2026 population of 90. Mentasta Lake is currently declining at a rate of -1.1% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The median age in Mentasta Lake is 65.2 years: 68.2 years for males, and 65 years for females. For every 100 females there are 134.1 males.
Data after 2023 is projected based on recent change
Overall: 65.2 years
Female: 65 years
Male: 68.2 years
There are 78 adults, (51 of whom are seniors) in Mentasta Lake.
Female: 41 (42.7%)
Male: 55 (57.3%)
The racial composition of Mentasta Lake includes 50% Native American, 31.25% White, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| Native American | 48 | 50% |
| White | 30 | 31.25% |
| Two or more races | 18 | 18.75% |