Chester township
- County:
- Lake County
- County Seat:
- No
- Area (mi²):
- 28.164
- State:
- South Dakota
Chester township is located in Lake County, South Dakota. Chester township has a 2026 population of 87. Chester township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 87 in 2020.
The median age in Chester township is 60.7 years: 58.8 years for males, and 74.2 years for females. For every 100 females there are 128.6 males.