Menno township is located in Marion County, Kansas. Menno township has a 2026 population of 324. Menno township is currently declining at a rate of -0.31% annually and its population has decreased by -0.31% since the most recent census, which recorded a population of 325 in 2020.
The median household income in Menno township is $85,417 with a poverty rate of 5.14%. The median age in Menno township is 63.6 years: 64.2 years for males, and 61.6 years for females. For every 100 females there are 111.9 males.