Martinsdale Colony is a CDP located in Meagher County, Montana. Martinsdale Colony has a 2026 population of 44. Martinsdale Colony is currently growing at a rate of 4.76% 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 Martinsdale Colony is 49.2 years: 0 years for males, and 28.5 years for females. For every 100 females there are 29.5 males.
Data after 2023 is projected based on recent change
Overall: 49.2 years
Female: 28.5 years
Male: 0 years
There are 57 adults, (0 of whom are seniors) in Martinsdale Colony.
Female: 44 (77.2%)
Male: 13 (22.8%)
The racial composition of Martinsdale Colony includes 68.42% White, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 39 | 68.42% |
| Two or more races | 18 | 31.58% |