Marion township
- County:
- Grundy County
- County Seat:
- No
- Area (mi²):
- 42.151
- State:
- Missouri
Marion township is located in Grundy County, Missouri. Marion township has a 2026 population of 259. Marion township is currently declining at a rate of -0.38% annually and its population has decreased by 0% since the most recent census, which recorded a population of 259 in 2020.
The median household income in Marion township is $48,864 with a poverty rate of 19.69%. The median age in Marion township is 51.4 years: 59.3 years for males, and 37.6 years for females. For every 100 females there are 143.7 males.