Hartland is located in Waukesha county Wisconsin with a geographic area of 5.5 square miles. The total population in Hartland is 9,317 with 48.0% male and 52.0% female. Children under age 5 represent 7.1% of the population, under age 18 equal 23.1% of the population and over age 65 is 18.6% of the population. The median household income is $82,546, per capita income is $48,427. There are a total of 3,600 housing units with 62.9% owner occupied. Education includes 22.1% of residents that are high school graduates and 45.3% with a bachelor's degree or higher. The average temperature in Hartland in the summer is 66 degrees, and in the winter 17 degrees.