Day township
- County:
- Clark County
- County Seat:
- No
- Area (mi²):
- 34.533
- State:
- South Dakota
Day township is located in Clark County, South Dakota. Day township has a 2026 population of 109. Day township is currently growing at a rate of 0.93% annually and its population has increased by 3.81% since the most recent census, which recorded a population of 105 in 2020.
The median household income in Day township is $117,750 with a poverty rate of 0%. The median age in Day township is 40.3 years: 40.2 years for males, and 41.1 years for females. For every 100 females there are 97.8 males.