Kentucky in United States with a geographic area of 40,408.8 square miles. The total population in Kentucky is 4,461,952 with 49.2% male and 50.8% female. Children under age 5 represent 6.1% of the population, under age 18 equal 22.6% of the population and over age 65 is 16.4% of the population. The median household income is $52,238, per capita income is $29,123. There are a total of 1,748,053 housing units with 67.6% owner occupied. Education includes 30.2% of residents that are high school graduates and 26.9% with a bachelor's degree or higher. The average temperature in Kentucky in the summer is 75 degrees, and in the winter 36 degrees.