Waukesha is located in Waukesha county Wisconsin with a geographic area of 25.5 square miles. The total population in Waukesha is 72,419 with 48.9% male and 51.1% female. Children under age 5 represent 5.3% of the population, under age 18 equal 20.0% of the population and over age 65 is 14.3% of the population. The median household income is $65,688, per capita income is $34,785. There are a total of 29,704 housing units with 56.9% owner occupied. Education includes 20.7% of residents that are high school graduates and 40.2% with a bachelor's degree or higher. The average temperature in Waukesha in the summer is 72 degrees, and in the winter 17 degrees.