
Walnut township
- County:
- Marshall County
- County Seat:
- No
- Area (mi²):
- 37.7
- State:
- Indiana
Walnut township is located in Marshall County, Indiana. Walnut township has a 2025 population of 2,785. Walnut township is currently declining at a rate of -0.96% annually and its population has decreased by -3.47% since the most recent census, which recorded a population of 2,885 in 2020.
The average household income in Walnut township is $67,486 with a poverty rate of 11.95%. The median age in Walnut township is 38.2 years: 36.1 years for males, and 41.3 years for females.