Buffalo Gap
- County:
- Custer County
- County Seat:
- No
- Area (mi²):
- 0.306
- State:
- South Dakota
Buffalo Gap is a town located in Custer County, South Dakota. Buffalo Gap has a 2026 population of 154. Buffalo Gap is currently growing at a rate of 3.36% annually and its population has increased by 19.38% since the most recent census, which recorded a population of 129 in 2020.
The median household income in Buffalo Gap is $54,063 with a poverty rate of 1.53%. The median age in Buffalo Gap is 66.3 years: 69.1 years for males, and 64.3 years for females. For every 100 females there are 114.8 males.