Muskego is located in Waukesha county Wisconsin with a geographic area of 31.6 square miles. The total population in Muskego is 25,077 with 50.2% male and 49.8% female. Children under age 5 represent 4.6% of the population, under age 18 equal 23.2% of the population and over age 65 is 16.4% of the population. The median household income is $95,472, per capita income is $43,428. There are a total of 9,564 housing units with 86.1% owner occupied. Education includes 23.7% of residents that are high school graduates and 39.4% with a bachelor's degree or higher. The average temperature in Muskego in the summer is 72 degrees, and in the winter 17 degrees.