According to the United Census Bureau, Munson Township has a total of 37.6 square miles, or which 34.6 square miles of it is land and 3.0 square miles of it is water. The elevation is 1,089 ft.

In 2000 there were 496 households out of which 32.7% had children under the age of 18 living with them, 78.6% were married couples living together, 2.6% had a female householder with no husband present, and 16.3% were non-families. 12.7% of all households were made up of individuals and 3.4% had someone living alone who was 65 years of age or older. The average household size was 2.72 and the average family size was 2.98.

In the township the population was spread out with 25.0% under the age of 18, 5.8% from 18 to 24, 28.6% from 25 to 44, 27.9% from 45 to 64, and 12.7% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 111.4 males. For every 100 females age 18 and over, there were 116.5 males.

The median income for a household in the township was $49,539, and the median income for a family was $51,974. Males had a median income of $32,350 versus $23,073 for females. The per capita income for the township was $20,446. About 2.3% of families and 3.3% of the population were below the poverty line, including 5.2% of those under age 18 and 10.8% of those age 65 or over. ​

Township Statistics 

Munson Township