Horn lake is located in Desoto county Mississippi with a geographic area of 16.0 square miles. The total population in Horn lake is 27,234 with 47.3% male and 52.7% female. Children under age 5 represent 6.1% of the population, under age 18 equal 26.5% of the population and over age 65 is 10.5% of the population. The median household income is $52,181, per capita income is $22,125. There are a total of 9,270 housing units with 57.3% owner occupied. Education includes 30.2% of residents that are high school graduates and 21.5% with a bachelor's degree or higher. The average temperature in Horn lake in the summer is 79 degrees, and in the winter 44 degrees.