
Willow Lake township
- County:
- Clark County
- County Seat:
- No
- Area (mi²):
- 35.493
- State:
- South Dakota
Willow Lake township is located in Clark County, South Dakota. Willow Lake township has a 2025 population of 49. Willow Lake township is currently declining at a rate of 0% annually and its population has increased by 4.26% since the most recent census, which recorded a population of 47 in 2020.
The average household income in Willow Lake township is $112,844 with a poverty rate of 13.95%. The median age in Willow Lake township is 63.5 years: 63.1 years for males, and 65.1 years for females.