Richland township
- County:
- Marshall County
- County Seat:
- No
- Area (mi²):
- 35.991
- State:
- Illinois
Richland township is located in Marshall County, Illinois. Richland township has a 2026 population of 398. Richland township is currently declining at a rate of -1% annually and its population has decreased by -1% since the most recent census, which recorded a population of 402 in 2020.
The median household income in Richland township is $79,375 with a poverty rate of 2.97%. The median age in Richland township is 61.7 years: 62.3 years for males, and 60.9 years for females. For every 100 females there are 87.2 males.