Jerseyville is located in Jersey county Illinois with a geographic area of 5.2 square miles. The total population in Jerseyville is 7,860 with 45.0% male and 55.0% female. Children under age 5 represent 4.0% of the population, under age 18 equal 22.8% of the population and over age 65 is 17.2% of the population. The median household income is $57,967, per capita income is $29,205. There are a total of 3,078 housing units with 68.9% owner occupied. Education includes 34.9% of residents that are high school graduates and 20.4% with a bachelor's degree or higher. The average temperature in Jerseyville in the summer is 74 degrees, and in the winter 27 degrees.
