Helenville is located in Jefferson county Wisconsin with a geographic area of 0.6 square miles. The total population in Helenville is 245 with 64.1% male and 35.9% female. Children under age 5 represent 6.1% of the population, under age 18 equal 19.2% of the population and over age 65 is 8.2% of the population. The median household income is $101,310, per capita income is $36,478. There are a total of 100 housing units with 85.0% owner occupied. Education includes 19.0% of residents that are high school graduates and 36.0% with a bachelor's degree or higher. The average temperature in Helenville in the summer is 66 degrees, and in the winter 17 degrees.