The median age in Monson Township, Minnesota is 23.5, as per 2021 ACS 5-Year Estimates. Of the total population, 9.43% were under the age of 15, 55.66% aged 15 to 29, 15.09% aged 30 to 64, 16.04% aged 65 to 84, and 3.77% were 85 years of age and older.