Three Rivers township
- County:
- Spink County
- County Seat:
- No
- Area (mi²):
- 35.976
- State:
- South Dakota
Three Rivers township is located in Spink County, South Dakota. Three Rivers township has a 2026 population of 63. Three Rivers township is currently growing at a rate of 1.61% annually but its population has decreased by -3.08% since the most recent census, which recorded a population of 65 in 2020.
The median household income in Three Rivers township is $107,308 with a poverty rate of 0%. The median age in Three Rivers township is 49.3 years: 50.1 years for males, and 49.2 years for females. For every 100 females there are 104.8 males.