Munson township is located in Henry County, Illinois. Munson township has a 2026 population of 351. Munson township is currently declining at a rate of -0.85% annually and its population has decreased by -1.96% since the most recent census, which recorded a population of 358 in 2020.
The median age in Munson township is 55 years: 57.3 years for males, and 54.8 years for females. For every 100 females there are 73.0 males.