Lake township
- County:
- Roberts County
- County Seat:
- No
- Area (mi²):
- 36.829
- State:
- South Dakota
Lake township is located in Roberts County, South Dakota. Lake township has a 2026 population of 263. Lake township is currently growing at a rate of 0.77% annually and its population has increased by 1.94% since the most recent census, which recorded a population of 258 in 2020.
The median household income in Lake township is $76,339 with a poverty rate of 4.59%. The median age in Lake township is 60.2 years: 61 years for males, and 59.1 years for females. For every 100 females there are 121.1 males.