The median age in Granville Township, Minnesota is 58.6, as per 2021 ACS 5-Year Estimates. Of the total population, 12.82% were under the age of 15, 0.00% aged 15 to 29, 56.41% aged 30 to 64, 12.82% aged 65 to 84, and 17.95% were 85 years of age and older.