
Southwest Marion township
- County:
- Polk County
- County Seat:
- No
- Area (mi²):
- 24.693
- State:
- Missouri
Southwest Marion township is located in Polk County, Missouri. Southwest Marion township has a 2025 population of 4,114. Southwest Marion 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 Southwest Marion township is $54,988 with a poverty rate of 23.85%. The median age in Southwest Marion township is 30.9 years: 27.7 years for males, and 32 years for females.