Harmony township
- County:
- Edmunds County
- County Seat:
- No
- Area (mi²):
- 36.202
- State:
- South Dakota
Harmony township is located in Edmunds County, South Dakota. Harmony township has a 2026 population of 289. Harmony township is currently declining at a rate of -0.69% annually and its population has decreased by 0% since the most recent census, which recorded a population of 289 in 2020.
The median age in Harmony township is 68.4 years: 0 years for males, and 69.3 years for females. For every 100 females there are 20.8 males.