
Washington township
- County:
- Clark County
- County Seat:
- No
- Area (mi²):
- 35.536
- State:
- South Dakota
Washington township is located in Clark County, South Dakota. Washington township has a 2025 population of 94. Washington township is currently growing at a rate of 3.3% annually and its population has increased by 11.9% since the most recent census, which recorded a population of 84 in 2020.
The average household income in Washington township is $104,577 with a poverty rate of 1.77%. The median age in Washington township is 31.4 years: 43.1 years for males, and 21.6 years for females.