
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 2025 population of 31. Altamont is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 31 in 2020.
The average household income in Altamont is $61,588 with a poverty rate of 0%. The median age in Altamont is 39 years: 37.3 years for males, and 49.5 years for females.