Big Springs township
- County:
- Union County
- County Seat:
- No
- Area (mi²):
- 36.614
- State:
- South Dakota
Big Springs township is located in Union County, South Dakota. Big Springs township has a 2026 population of 277. Big Springs township is currently growing at a rate of 1.47% annually and its population has increased by 7.78% since the most recent census, which recorded a population of 257 in 2020.
The median household income in Big Springs township is $96,103 with a poverty rate of 2.11%. The median age in Big Springs township is 44 years: 43.9 years for males, and 44.1 years for females. For every 100 females there are 146.9 males.