Mammoth
- County:
- Park County
- County Seat:
- No
- Area (mi²):
- 0.788
- State:
- Wyoming
Mammoth is a CDP located in Park County, Wyoming. Mammoth has a 2025 population of 20 . Mammoth is currently declining at a rate of -45.95% annually and its population has decreased by -75.9% since the most recent census, which recorded a population of 83 in 2020.
The median age in Mammoth is 76.2 years: 76.4 years for males, and 46.5 years for females. For every 100 females there are 284.6 males.