Yorkville is located in Jefferson county Ohio with a geographic area of 0.6 square miles. The total population in Yorkville is 1,013 with 50.0% male and 50.0% female. Children under age 5 represent 8.1% of the population, under age 18 equal 17.8% of the population and over age 65 is 23.7% of the population. The median household income is $40,921, per capita income is $34,792. There are a total of 484 housing units with 59.5% owner occupied. Education includes 55.0% of residents that are high school graduates and 5.8% with a bachelor's degree or higher. The average temperature in Yorkville in the summer is 73 degrees, and in the winter 32 degrees.