Garrison is a CDP located in Powell County, Montana. Garrison has a 2025 population of 159 . Garrison is currently growing at a rate of 7.43% annually and its population has increased by 80.68% since the most recent census, which recorded a population of 88 in 2020.
The average household income in Garrison is $58,133 with a poverty rate of 8.7%. The median age in Garrison is 38.2 years: 19.3 years for males, and 38.7 years for females. For every 100 females there are 176.0 males.
Data after 2023 is projected based on recent change
The racial composition of Garrison includes 96.38% White, and smaller percentages for and multiracial populations.
White (96.38%)
Two or more races (3.62%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 133 | 96.38% |
| Two or more races | 5 | 3.62% |
Married
Widowed
Divorced
Separated
Never Married
Garrison's average per capita income is $39,063. Household income levels show a median of $46,250. The poverty rate stands at 8.7%.
Name | Median | Mean |
|---|---|---|
| Married Families | $46,875 | - |
| Families | $46,563 | $60,252 |
| Households | $46,250 | $58,133 |
| Non Families | - | $55,826 |
Average Income
Median Household Income
Poverty Rate