
Ontario township
- County:
- Hand County
- County Seat:
- No
- Area (mi²):
- 35.68
- State:
- South Dakota
Ontario township is located in Hand County, South Dakota. Ontario township has a 2025 population of 25. Ontario township is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 25 in 2020.
The average household income in Ontario township is $40,224 with a poverty rate of 51.52%. The median age in Ontario township is 39.8 years: 37.3 years for males, and 57 years for females.