
Harmony township
- County:
- Spink County
- County Seat:
- No
- Area (mi²):
- 36.102
- State:
- South Dakota
Harmony township is located in Spink County, South Dakota. Harmony township has a 2025 population of 48. Harmony township is currently declining at a rate of -2.04% annually and its population has decreased by -7.69% since the most recent census, which recorded a population of 52 in 2020.
The average household income in Harmony township is $68,954 with a poverty rate of 0%. The median age in Harmony township is 64.6 years: 0 years for males, and 64.4 years for females.