Hazelwood is located in St. louis county Missouri with a geographic area of 16.0 square miles. The total population in Hazelwood is 25,222 with 47.5% male and 52.5% female. Children under age 5 represent 6.7% of the population, under age 18 equal 21.5% of the population and over age 65 is 15.9% of the population. The median household income is $52,201, per capita income is $31,977. There are a total of 11,205 housing units with 59.7% owner occupied. Education includes 26.3% of residents that are high school graduates and 32.4% with a bachelor's degree or higher. The average temperature in Hazelwood in the summer is 78 degrees, and in the winter 32 degrees.