Costa mesa is located in Orange county California with a geographic area of 15.8 square miles. The total population in Costa mesa is 112,958 with 50.4% male and 49.6% female. Children under age 5 represent 5.8% of the population, under age 18 equal 19.8% of the population and over age 65 is 11.9% of the population. The median household income is $90,370, per capita income is $44,291. There are a total of 40,660 housing units with 40.5% owner occupied. Education includes 13.3% of residents that are high school graduates and 46.0% with a bachelor's degree or higher. The average temperature in Costa mesa in the summer is 69 degrees, and in the winter 43 degrees.
