Swan Lake township
- County:
- Turner County
- County Seat:
- No
- Area (mi²):
- 35.248
- State:
- South Dakota
Swan Lake township is located in Turner County, South Dakota. Swan Lake township has a 2026 population of 268. Swan Lake township is currently declining at a rate of 0% annually and its population has increased by 4.28% since the most recent census, which recorded a population of 257 in 2020.
The median household income in Swan Lake township is $90,833 with a poverty rate of 0.69%. The median age in Swan Lake township is 46.3 years: 46 years for males, and 57.7 years for females. For every 100 females there are 154.4 males.