Chester township
- County:
- Lake County
- County Seat:
- No
- Area (mi²):
- 33.192
- State:
- South Dakota
Chester township is located in Lake County, South Dakota. Chester township has a 2026 population of 690. Chester township is currently declining at a rate of -0.29% annually but its population has increased by 1.77% since the most recent census, which recorded a population of 678 in 2020.
The median household income in Chester township is $69,375 with a poverty rate of 8.27%. The median age in Chester township is 53.5 years: 62 years for males, and 48.6 years for females. For every 100 females there are 97.2 males.