Atlanta is located in Dekalb county Georgia with a geographic area of 135.3 square miles. The total population in Atlanta is 497,642 with 48.7% male and 51.3% female. Children under age 5 represent 5.4% of the population, under age 18 equal 17.6% of the population and over age 65 is 11.6% of the population. The median household income is $64,179, per capita income is $50,032. There are a total of 215,179 housing units with 44.8% owner occupied. Education includes 15.8% of residents that are high school graduates and 57.2% with a bachelor's degree or higher. The average temperature in Atlanta in the summer is 77 degrees, and in the winter 42 degrees.