The median age in Leonardsville Township, Minnesota is 31.5, as per 2021 ACS 5-Year Estimates. Of the total population, 31.30% were under the age of 15, 18.26% aged 15 to 29, 25.22% aged 30 to 64, 25.22% aged 65 to 84, and 0.00% were 85 years of age and older.