
Mammoth
- County:
- Jefferson County
- County Seat:
- No
- Area (mi²):
- 0.35
- State:
- Montana
Mammoth is a CDP located in Jefferson County, Montana. Mammoth has a 2025 population of 22. Mammoth 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 average household income in Mammoth is -$1000.00 Mn with a poverty rate of 0%. The median age in Mammoth is 0 years: 0 years for males, and 0 years for females.