Lake arrowhead is located in San bernardino county California with a geographic area of 17.7 square miles. The total population in Lake arrowhead is 9,741 with 51.0% male and 49.0% female. Children under age 5 represent 4.5% of the population, under age 18 equal 20.5% of the population and over age 65 is 21.8% of the population. The median household income is $73,814, per capita income is $38,896. There are a total of 3,772 housing units with 75.0% owner occupied. Education includes 22.0% of residents that are high school graduates and 31.1% with a bachelor's degree or higher. The average temperature in Lake arrowhead in the summer is 76 degrees, and in the winter 43 degrees.