Mchenry is located in Lake county Illinois with a geographic area of 14.5 square miles. The total population in Mchenry is 26,889 with 48.5% male and 51.5% female. Children under age 5 represent 4.6% of the population, under age 18 equal 20.8% of the population and over age 65 is 16.3% of the population. The median household income is $77,004, per capita income is $38,090. There are a total of 10,504 housing units with 73.0% owner occupied. Education includes 24.6% of residents that are high school graduates and 34.9% with a bachelor's degree or higher. The average temperature in Mchenry in the summer is 74 degrees, and in the winter 27 degrees.
