Norco is located in Riverside county California with a geographic area of 13.9 square miles. The total population in Norco is 27,021 with 54.4% male and 45.6% female. Children under age 5 represent 3.7% of the population, under age 18 equal 17.9% of the population and over age 65 is 15.0% of the population. The median household income is $106,370, per capita income is $35,292. There are a total of 7,354 housing units with 82.3% owner occupied. Education includes 25.0% of residents that are high school graduates and 27.2% with a bachelor's degree or higher. The average temperature in Norco in the summer is 75 degrees, and in the winter 43 degrees.