Mchenry is located in Ohio county Kentucky with a geographic area of 0.6 square miles. The total population in Mchenry is 312 with 53.2% male and 46.8% female. Children under age 5 represent 5.8% of the population, under age 18 equal 23.7% of the population and over age 65 is 10.9% of the population. The median household income is $39,583, per capita income is $18,891. There are a total of 120 housing units with 75.8% owner occupied. Education includes 54.2% of residents that are high school graduates and 0.0% with a bachelor's degree or higher. The average temperature in Mchenry in the summer is 76 degrees, and in the winter 36 degrees.