The median age in Rost Township, Minnesota is 32.8, as per 2021 ACS 5-Year Estimates. Of the total population, 26.72% were under the age of 15, 13.74% aged 15 to 29, 45.04% aged 30 to 64, 12.98% aged 65 to 84, and 1.53% were 85 years of age and older.