Westlake is located in Denton county Texas with a geographic area of 6.9 square miles. The total population in Westlake is 1,511 with 49.7% male and 50.3% female. Children under age 5 represent 4.5% of the population, under age 18 equal 28.9% of the population and over age 65 is 6.2% of the population. The median household income is $244,063, per capita income is $142,583. There are a total of 515 housing units with 84.3% owner occupied. Education includes 4.9% of residents that are high school graduates and 78.8% with a bachelor's degree or higher. The average temperature in Westlake in the summer is 83 degrees, and in the winter 49 degrees.