Windsor is located in Sonoma county California with a geographic area of 7.4 square miles. The total population in Windsor is 27,635 with 49.4% male and 50.6% female. Children under age 5 represent 4.3% of the population, under age 18 equal 23.9% of the population and over age 65 is 15.4% of the population. The median household income is $117,533, per capita income is $43,874. There are a total of 9,378 housing units with 78.0% owner occupied. Education includes 16.2% of residents that are high school graduates and 37.7% with a bachelor's degree or higher. The average temperature in Windsor in the summer is 76 degrees, and in the winter 43 degrees.