Riverside township
- County:
- Clay County
- County Seat:
- No
- Area (mi²):
- 35.945
- State:
- South Dakota
Riverside township is located in Clay County, South Dakota. Riverside township has a 2026 population of 125. Riverside township is currently declining at a rate of -1.57% annually but its population has increased by 3.31% since the most recent census, which recorded a population of 121 in 2020.
The median household income in Riverside township is $106,719 with a poverty rate of 0%. The median age in Riverside township is 40.3 years: 39.7 years for males, and 41.5 years for females. For every 100 females there are 136.8 males.