Lake preston is located in Kingsbury county South dakota with a geographic area of 0.8 square miles. The total population in Lake preston is 448 with 52.5% male and 47.5% female. Children under age 5 represent 2.7% of the population, under age 18 equal 12.3% of the population and over age 65 is 25.4% of the population. The median household income is $51,397, per capita income is $33,599. There are a total of 247 housing units with 66.8% owner occupied. Education includes 51.4% of residents that are high school graduates and 10.5% with a bachelor's degree or higher. The average temperature in Lake preston in the summer is 70 degrees, and in the winter 15 degrees.