Ottertail is located in Otter tail county Minnesota with a geographic area of 4.3 square miles. The total population in Ottertail is 531 with 54.6% male and 45.4% female. Children under age 5 represent 3.6% of the population, under age 18 equal 21.3% of the population and over age 65 is 17.1% of the population. The median household income is $79,583, per capita income is $39,708. There are a total of 221 housing units with 90.0% owner occupied. Education includes 24.9% of residents that are high school graduates and 29.4% with a bachelor's degree or higher. The average temperature in Ottertail in the summer is 70 degrees, and in the winter 9 degrees.