
Groton township
- County:
- Brown County
- County Seat:
- No
- Area (mi²):
- 46.255
- State:
- South Dakota
Groton township is located in Brown County, South Dakota. Groton township has a 2025 population of 126. Groton township is currently declining at a rate of -1.56% annually and its population has decreased by -3.82% since the most recent census, which recorded a population of 131 in 2020.
The average household income in Groton township is -$1000.00 Mn with a poverty rate of 0%. The median age in Groton township is 58.6 years: 0 years for males, and 0 years for females.