Altamont Flag

Altamont

County:
Deuel County
County Seat:
No
Area (mi²):
1.254
State:
South Dakota

Altamont is a town located in Deuel County, South Dakota. Altamont has a 2026 population of 33. Altamont is currently declining at a rate of 0% annually and its population has increased by 3.13% since the most recent census, which recorded a population of 32 in 2020.

The median age in Altamont is 37.3 years: 37.7 years for males, and 35.5 years for females. For every 100 females there are 76.9 males.

33
Total Population
26
Density (mi²)

Altamont Population

Altamont Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20263300%
20253300%
20243313.13%
20233200%
20223200%
20213200%
20203200%
20193413.03%
20183300%
20173300%
20163300%
20153300%
20143300%
201333-1-2.94%
20123400%
20113400%
20103400%

Median Age

Overall: 37.3 years
Female: 35.5 years
Male: 37.7 years

Altamont Adults

There are 29 adults, (12 of whom are seniors) in Altamont.

Sex Ratio

Female: 26 (56.5%)
Male: 20 (43.5%)

Demographics

The racial composition of Altamont includes 80.43% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White3780.43%
Two or more races919.57%
Race
Population ↓
Percentage (of total)
Two or more races510.87%
Race
Population ↓
Percentage (of total)
White3780.43%
Two or more races48.7%

Altamont 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)