Post Mountain is a CDP located in Trinity County, California. Post Mountain has a 2026 population of 114. Post Mountain is currently growing at a rate of 6.54% 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 Post Mountain is 42.9 years: 0 years for males, and 0 years for females. For every 100 females there are 26.6 males.
Data after 2023 is projected based on recent change
Overall: 42.9 years
Female: 0 years
Male: 0 years
There are 233 adults, (110 of whom are seniors) in Post Mountain.
Female: 184 (79%)
Male: 49 (21%)
The racial composition of Post Mountain includes 52.79% White, 47.21% other race, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 123 | 52.79% |
| Other race | 110 | 47.21% |