Ridgefield is located in Clark county Washington with a geographic area of 7.3 square miles. The total population in Ridgefield is 8,751 with 47.5% male and 52.5% female. Children under age 5 represent 7.3% of the population, under age 18 equal 31.2% of the population and over age 65 is 10.7% of the population. The median household income is $95,344, per capita income is $38,169. There are a total of 2,899 housing units with 85.7% owner occupied. Education includes 15.3% of residents that are high school graduates and 40.7% with a bachelor's degree or higher. The average temperature in Ridgefield in the summer is 63 degrees, and in the winter 42 degrees.