Mammoth, Montana

Census-designated place in Montana, United States

45°40′2″N 112°1′7″W / 45.66722°N 112.01861°W / 45.66722; -112.01861CountryUnited StatesStateMontanaCountyMadisonArea

^[1]

• Total0.35 sq mi (0.91 km²) • Land0.35 sq mi (0.91 km²) • Water0.00 sq mi (0.00 km²)Elevation

6,016 ft (1,834 m)Population

(2020)^[2]

• Total4 • Density11.43/sq mi (4.41/km²)Time zoneUTC-7 (Mountain (MST)) • Summer (DST)UTC-6 (MDT)ZIP Codes

59721 (Cardwell)
59747 (Pony)

Area code406FIPS code30-47460GNIS feature ID2806644^[3]

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,^[3] when it had a population of 4.^[2]

Demographics

Historical population
Census	Pop.	Note	%±
2020	4		—
U.S. Decennial Census^[4]

References

^ "2023 U.S. Gazetteer Files: Montana". United States Census Bureau. Retrieved May 16, 2024.
^ ^a ^b "P1. Race – Harrison CDP, Montana: 2020 DEC Redistricting Data (PL 94-171)". U.S. Census Bureau. Retrieved May 16, 2024.
^ ^a ^b "Mammoth Census Designated Place". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
^ "Census of Population and Housing". Census.gov. Retrieved June 4, 2016.