Summersville is located in Green county Kentucky with a geographic area of 2.9 square miles. The total population in Summersville is 780 with 40.6% male and 59.4% female. Children under age 5 represent 13.2% of the population, under age 18 equal 33.5% of the population and over age 65 is 12.3% of the population. The median household income is $29,792, per capita income is $47,694. There are a total of 285 housing units with 67.7% owner occupied. Education includes 50.5% of residents that are high school graduates and 8.8% with a bachelor's degree or higher. The average temperature in Summersville in the summer is 76 degrees, and in the winter 36 degrees.