Glendora is located in Los angeles county California with a geographic area of 19.5 square miles. The total population in Glendora is 51,087 with 47.4% male and 52.6% female. Children under age 5 represent 5.5% of the population, under age 18 equal 22.9% of the population and over age 65 is 16.1% of the population. The median household income is $99,153, per capita income is $42,494. There are a total of 16,523 housing units with 70.4% owner occupied. Education includes 16.9% of residents that are high school graduates and 42.8% with a bachelor's degree or higher. The average temperature in Glendora in the summer is 76 degrees, and in the winter 43 degrees.