
Marshall township
- County:
- Clark County
- County Seat:
- No
- Area (mi²):
- 31.708
- State:
- Illinois
Marshall township is located in Clark County, Illinois. Marshall township has a 2025 population of 4,430. Marshall township is currently declining at a rate of -0.47% annually and its population has decreased by -2.87% since the most recent census, which recorded a population of 4,561 in 2020.
The average household income in Marshall township is $86,906 with a poverty rate of 4.27%. The median age in Marshall township is 44.1 years: 39.7 years for males, and 45.7 years for females.