Niles is located in Cook county Illinois with a geographic area of 5.8 square miles. The total population in Niles is 29,198 with 48.3% male and 51.7% female. Children under age 5 represent 4.6% of the population, under age 18 equal 16.4% of the population and over age 65 is 25.1% of the population. The median household income is $63,490, per capita income is $33,692. There are a total of 11,065 housing units with 75.9% owner occupied. Education includes 27.0% of residents that are high school graduates and 37.8% with a bachelor's degree or higher. The average temperature in Niles in the summer is 74 degrees, and in the winter 27 degrees.
