Summersville is located in Nicholas county West virginia with a geographic area of 4.5 square miles. The total population in Summersville is 3,316 with 51.4% male and 48.6% female. Children under age 5 represent 3.8% of the population, under age 18 equal 17.5% of the population and over age 65 is 32.2% of the population. The median household income is $43,287, per capita income is $28,232. There are a total of 1,553 housing units with 64.5% owner occupied. Education includes 34.0% of residents that are high school graduates and 31.2% with a bachelor's degree or higher. The average temperature in Summersville in the summer is 69 degrees, and in the winter 32 degrees.