The median age in Roseville township, Grant County, Minnesota is 58.8, as per 2021 ACS 5-Year Estimates. Of the total population, 1.79% were under the age of 15, 25.00% aged 15 to 29, 27.68% aged 30 to 64, 44.64% aged 65 to 84, and 0.89% were 85 years of age and older.