
Gardiner
- County:
- Park County
- County Seat:
- No
- Area (mi²):
- 5.792
- State:
- Montana
Gardiner is a CDP located in Park County, Montana. Gardiner has a 2025 population of 711. Gardiner is currently declining at a rate of -1.52% annually and its population has decreased by -20.38% since the most recent census, which recorded a population of 893 in 2020.
The average household income in Gardiner is $77,366 with a poverty rate of 15.68%. The median age in Gardiner is 43.9 years: 46.4 years for males, and 41 years for females.