Pompeys Pillar Flag

Pompeys Pillar

County Seat:
No
Area (mi²):
0.195
State:
Montana

Pompeys Pillar is a CDP located in Yellowstone County, Montana. Pompeys Pillar has a 2025 population of 29. Pompeys Pillar is currently growing at a rate of 7.41% annually but its population has decreased by -66.28% since the most recent census, which recorded a population of 86 in 2020.

The median age in Pompeys Pillar is 51.8 years: 0 years for males, and 0 years for females.

29
Total Population
149
Density (mi²)
2 7.41%
Growth

Pompeys Pillar Population

Pompeys Pillar Population

Data after 2023 is projected based on recent change

Demographics

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

Population by Race

White (100.0%)

Race
Population
Percentage (of total)
White25100%

Pompeys Pillar Marital Status

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

Married

Widowed

Divorced

Separated

Never Married

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)