Lake delton is located in Sauk county Wisconsin with a geographic area of 7.5 square miles. The total population in Lake delton is 2,989 with 55.4% male and 44.6% female. Children under age 5 represent 2.6% of the population, under age 18 equal 10.7% of the population and over age 65 is 20.0% of the population. The median household income is $48,980, per capita income is $26,789. There are a total of 1,572 housing units with 49.2% owner occupied. Education includes 25.0% of residents that are high school graduates and 22.8% with a bachelor's degree or higher. The average temperature in Lake delton in the summer is 66 degrees, and in the winter 17 degrees.