The median age in St. Joseph township, Kittson County, Minnesota is 43.6, as per 2021 ACS 5-Year Estimates. Of the total population, 17.54% were under the age of 15, 22.81% aged 15 to 29, 14.04% aged 30 to 64, 45.61% aged 65 to 84, and 0.00% were 85 years of age and older.