Dallas is located in Dallas county Texas with a geographic area of 339.6 square miles. The total population in Dallas is 1,338,846 with 49.6% male and 50.4% female. Children under age 5 represent 7.4% of the population, under age 18 equal 24.8% of the population and over age 65 is 10.6% of the population. The median household income is $54,747, per capita income is $35,487. There are a total of 524,498 housing units with 41.3% owner occupied. Education includes 19.8% of residents that are high school graduates and 38.2% with a bachelor's degree or higher. The average temperature in Dallas in the summer is 84 degrees, and in the winter 49 degrees.