
Union township
- County:
- Brule County
- County Seat:
- No
- Area (mi²):
- 35.516
- State:
- South Dakota
Union township is located in Brule County, South Dakota. Union township has a 2025 population of 73. Union township is currently declining at a rate of -1.35% annually and its population has decreased by 0% since the most recent census, which recorded a population of 73 in 2020.
The average household income in Union township is $97,776 with a poverty rate of 0%. The median age in Union township is 26 years: 21 years for males, and 31.2 years for females.