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 2026 population of 31. Pompeys Pillar is currently growing at a rate of 6.9% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median age in Pompeys Pillar is 51.9 years: 0 years for males, and 0 years for females. For every 100 females there are 28.6 males.

31
Total Population
159
Density (mi²)
2 6.9%
Growth

Pompeys Pillar Population

Pompeys Pillar Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20263126.9%
20252927.41%

Median Age

Overall: 51.9 years
Female: 0 years
Male: 0 years

Pompeys Pillar Adults

There are 19 adults, (13 of whom are seniors) in Pompeys Pillar.

Sex Ratio

Female: 21 (77.8%)
Male: 6 (22.2%)

Demographics

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

Population by Race

Race
Population ↓
Percentage (of total)
White27100%
Race
Population ↓
Percentage (of total)
White27100%

Pompeys Pillar 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)