Mammoth, Montana

CountryUnited States

Elevation

^[2]

6,014 ft (1,833 m)

Time zoneUTC-7 (Mountain (MST))

ZIP Codes

59721 (Cardwell)
59747 (Pony)

Mammoth, Montana
Census-designated place
Mammoth Show map of Montana Mammoth Show map of the United States
Coordinates: 45°40′09″N 112°01′04″W / 45.66917°N 112.01778°W / 45.66917; -112.01778
Country	United States
State	Montana
County	Madison
Area [1]
• Total	0.35 sq mi (0.91 km2)
• Land	0.35 sq mi (0.91 km2)
• Water	0 sq mi (0.00 km2)
Elevation [2]	6,014 ft (1,833 m)
Population  (2020)[3]
• Total	4
• Density	11.4/sq mi (4.41/km2)
Time zone	UTC-7 (Mountain (MST))
• Summer (DST)	UTC-6 (MDT)
ZIP Codes	59721 (Cardwell) 59747 (Pony)
Area code	406
FIPS code	30-47460
GNIS feature ID	2806644[2]

Mammoth is an unincorporated community and census-designated place (CDP) in Madison County, Montana, United States. It is in the northern part of the county, in the valley of the South Boulder River within the northern end of the Tobacco Root Mountains. Via the South Boulder River, it is part of the Jefferson River watershed, one of the headwaters of the Missouri River.

Mammoth is reached by South Boulder Road, which leads north 11 miles (18 km) to Montana Highway 359 at a point 5 miles (8 km) south of Cardwell.

Mammoth was first listed as a CDP prior to the 2020 census,^[2] when it had a population of 4.^[3]