Mammoth Flag

Mammoth

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.

22
Total Population
63
Density (mi²)
1 4.76%
Growth

Mammoth Population

Mammoth Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Mammoth includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White17100%

Mammoth Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)