Diamond bar is located in Los angeles county California with a geographic area of 14.9 square miles. The total population in Diamond bar is 55,870 with 48.6% male and 51.4% female. Children under age 5 represent 5.7% of the population, under age 18 equal 20.3% of the population and over age 65 is 17.0% of the population. The median household income is $100,723, per capita income is $40,550. There are a total of 17,642 housing units with 76.4% owner occupied. Education includes 11.7% of residents that are high school graduates and 60.9% with a bachelor's degree or higher. The average temperature in Diamond bar in the summer is 76 degrees, and in the winter 43 degrees.
