Rainy Creek/Cheyenne
- County:
- Pennington County
- County Seat:
- No
- Area (mi²):
- 91.326
- State:
- South Dakota
Rainy Creek/Cheyenne is located in Pennington County, South Dakota. Rainy Creek/Cheyenne has a 2025 population of 20 . Rainy Creek/Cheyenne is currently growing at a rate of 5.26% annually and its population has increased by 11.11% since the most recent census, which recorded a population of 18 in 2020.
The median age in Rainy Creek/Cheyenne is 14.5 years: 9.5 years for males, and 15.5 years for females. For every 100 females there are 100.0 males.