Harvey is located in Cook county Illinois with a geographic area of 6.2 square miles. The total population in Harvey is 24,295 with 47.7% male and 52.3% female. Children under age 5 represent 5.7% of the population, under age 18 equal 25.8% of the population and over age 65 is 13.5% of the population. The median household income is $32,635, per capita income is $18,919. There are a total of 8,657 housing units with 51.8% owner occupied. Education includes 33.5% of residents that are high school graduates and 11.2% with a bachelor's degree or higher. The average temperature in Harvey in the summer is 72 degrees, and in the winter 27 degrees.