Willisville is located in Perry county Illinois with a geographic area of 0.4 square miles. The total population in Willisville is 596 with 52.5% male and 47.5% female. Children under age 5 represent 9.1% of the population, under age 18 equal 29.0% of the population and over age 65 is 8.6% of the population. The median household income is $54,125, per capita income is $21,733. There are a total of 247 housing units with 78.1% owner occupied. Education includes 33.2% of residents that are high school graduates and 6.9% with a bachelor's degree or higher. The average temperature in Willisville in the summer is 74 degrees, and in the winter 27 degrees.