
Fairfield township
- County:
- Beadle County
- County Seat:
- No
- Area (mi²):
- 36.761
- State:
- South Dakota
Fairfield township is located in Beadle County, South Dakota. Fairfield township has a 2025 population of 115. Fairfield township is currently declining at a rate of 0% annually and its population has increased by 5.5% since the most recent census, which recorded a population of 109 in 2020.
The average household income in Fairfield township is $86,297 with a poverty rate of 0%. The median age in Fairfield township is 51.8 years: 55.2 years for males, and 51.2 years for females.