South lyon is located in Oakland county Michigan with a geographic area of 3.7 square miles. The total population in South lyon is 11,818 with 45.6% male and 54.4% female. Children under age 5 represent 4.8% of the population, under age 18 equal 21.4% of the population and over age 65 is 16.9% of the population. The median household income is $74,300, per capita income is $43,134. There are a total of 5,076 housing units with 81.4% owner occupied. Education includes 16.9% of residents that are high school graduates and 43.2% with a bachelor's degree or higher. The average temperature in South lyon in the summer is 69 degrees, and in the winter 23 degrees.
