
Greycliff
- County:
- Sweet Grass County
- County Seat:
- No
- Area (mi²):
- 0.509
- State:
- Montana
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.