Eureka is located in Winnebago county Wisconsin with a geographic area of 1.1 square miles. The total population in Eureka is 410 with 52.4% male and 47.6% female. Children under age 5 represent 9.0% of the population, under age 18 equal 27.6% of the population and over age 65 is 8.3% of the population. The median household income is $65,521, per capita income is $23,037. There are a total of 135 housing units with 78.5% owner occupied. Education includes 37.8% of residents that are high school graduates and 21.5% with a bachelor's degree or higher. The average temperature in Eureka in the summer is 66 degrees, and in the winter 17 degrees.
