Rancho mission viejo is located in Orange county California with a geographic area of 37.8 square miles. The total population in Rancho mission viejo is 7,816 with 41.7% male and 58.3% female. Children under age 5 represent 16.0% of the population, under age 18 equal 29.5% of the population and over age 65 is 12.9% of the population. The median household income is $151,094, per capita income is $65,527. There are a total of 2,806 housing units with 82.8% owner occupied. Education includes 7.8% of residents that are high school graduates and 72.6% with a bachelor's degree or higher. The average temperature in Rancho mission viejo in the summer is 76 degrees, and in the winter 43 degrees.