Greycliff is a CDP located in Sweet Grass County, Montana. Greycliff has a 2025 population of 86 . Greycliff is currently declining at a rate of -2.27% annually and its population has decreased by -35.34% since the most recent census, which recorded a population of 133 in 2020.
The average household income in Greycliff is $86,159 with a poverty rate of 9.57%. The median age in Greycliff is 39.6 years: 24.5 years for males, and 39.8 years for females. For every 100 females there are 147.4 males.
Data after 2023 is projected based on recent change
The racial composition of Greycliff includes 54.26% White, and smaller percentages for and multiracial populations.
White (54.26%)
Two or more races (45.74%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 51 | 54.26% |
| Two or more races | 43 | 45.74% |
Married
Widowed
Divorced
Separated
Never Married
Greycliff's average per capita income is $65,250. Household income levels show a median of $90,650. The poverty rate stands at 9.57%.
Name | Median | Mean |
|---|---|---|
| Married Families | $91,450 | - |
| Families | $91,250 | $96,765 |
| Households | $90,650 | $86,159 |
| Non Families | $41,500 | $53,458 |
Average Income
Median Household Income
Poverty Rate