Millerdale Colony
- County:
- Buffalo County
- County Seat:
- No
- Area (mi²):
- 0.257
- State:
- South Dakota
Millerdale Colony is a CDP located in Buffalo County, South Dakota. Millerdale Colony has a 2025 population of 108 . Millerdale Colony is currently growing at a rate of 8% annually and its population has increased by 575% since the most recent census, which recorded a population of 16 in 2020.
The median age in Millerdale Colony is 33.8 years: 0 years for males, and 33.3 years for females. For every 100 females there are 39.3 males.