
South River township
- County:
- Marion County
- County Seat:
- No
- Area (mi²):
- 27.365
- State:
- Missouri
South River township is located in Marion County, Missouri. South River township has a 2025 population of 421. South River 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 0 in 2020.
The average household income in South River township is $129,981 with a poverty rate of 0%. The median age in South River township is 60.4 years: 45.7 years for males, and 61.9 years for females.