Island lake is located in Lake county Illinois with a geographic area of 3.3 square miles. The total population in Island lake is 8,112 with 49.3% male and 50.7% female. Children under age 5 represent 7.7% of the population, under age 18 equal 22.7% of the population and over age 65 is 14.0% of the population. The median household income is $83,970, per capita income is $35,714. There are a total of 3,001 housing units with 78.7% owner occupied. Education includes 30.0% of residents that are high school graduates and 32.0% with a bachelor's degree or higher. The average temperature in Island lake in the summer is 74 degrees, and in the winter 27 degrees.
