Tinley park is located in Cook county Illinois with a geographic area of 16.1 square miles. The total population in Tinley park is 56,082 with 49.8% male and 50.2% female. Children under age 5 represent 5.3% of the population, under age 18 equal 21.4% of the population and over age 65 is 17.5% of the population. The median household income is $82,163, per capita income is $40,955. There are a total of 21,871 housing units with 85.8% owner occupied. Education includes 23.8% of residents that are high school graduates and 38.9% with a bachelor's degree or higher. The average temperature in Tinley park in the summer is 74 degrees, and in the winter 27 degrees.