Farmington township
- County:
- Lake County
- County Seat:
- No
- Area (mi²):
- 35.878
- State:
- South Dakota
Farmington township is located in Lake County, South Dakota. Farmington township has a 2026 population of 209. Farmington township is currently declining at a rate of 0% annually and its population has increased by 1.46% since the most recent census, which recorded a population of 206 in 2020.
The median household income in Farmington township is $120,500 with a poverty rate of 0%. The median age in Farmington township is 36.5 years: 60.5 years for males, and 6.9 years for females. For every 100 females there are 75.7 males.