Big Stone township
- County:
- Grant County
- County Seat:
- No
- Area (mi²):
- 31.644
- State:
- South Dakota
Big Stone township is located in Grant County, South Dakota. Big Stone township has a 2026 population of 321. Big Stone township is currently growing at a rate of 0.63% annually and its population has increased by 1.58% since the most recent census, which recorded a population of 316 in 2020.
The median household income in Big Stone township is $110,759 with a poverty rate of 0.23%. The median age in Big Stone township is 32.6 years: 32.7 years for males, and 32.6 years for females. For every 100 females there are 111.9 males.