Mammoth Flag

Mammoth

County Seat:
No
Area (mi²):
0.35
State:
Montana

Mammoth is a CDP located in Jefferson County, Montana. Mammoth has a 2026 population of 21. Mammoth is currently growing at a rate of 5% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

21
Total Population
60
Density (mi²)
1 5%
Growth

Mammoth Population

Mammoth Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20262115%
202520211.11%

Median Age

Overall: 0 years
Female: 0 years
Male: 0 years

Mammoth Adults

There are 15 adults, (15 of whom are seniors) in Mammoth.

Sex Ratio

Female: 7 (46.7%)
Male: 8 (53.3%)

Demographics

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

Population by Race

Race
Population ↓
Percentage (of total)
White15100%
Race
Population ↓
Percentage (of total)
White15100%

Mammoth Marital Status

Nearby Cities

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)