Madison is located in Lake county Ohio with a geographic area of 5.1 square miles. The total population in Madison is 3,166 with 48.4% male and 51.6% female. Children under age 5 represent 2.4% of the population, under age 18 equal 19.0% of the population and over age 65 is 20.4% of the population. The median household income is $70,185, per capita income is $32,008. There are a total of 1,340 housing units with 80.9% owner occupied. Education includes 34.9% of residents that are high school graduates and 23.7% with a bachelor's degree or higher. The average temperature in Madison in the summer is 73 degrees, and in the winter 32 degrees.