Lake township
- County:
- Clark County
- County Seat:
- No
- Area (mi²):
- 34.466
- State:
- South Dakota
Lake township is located in Clark County, South Dakota. Lake township has a 2026 population of 188. Lake township is currently declining at a rate of 0% annually and its population has increased by 4.44% since the most recent census, which recorded a population of 180 in 2020.
The median household income in Lake township is $128,750 with a poverty rate of 0%. The median age in Lake township is 62.8 years: 71 years for males, and 37.6 years for females. For every 100 females there are 45.7 males.