Casco is located in Kewaunee county Wisconsin with a geographic area of 0.7 square miles. The total population in Casco is 597 with 48.7% male and 51.3% female. Children under age 5 represent 8.0% of the population, under age 18 equal 27.1% of the population and over age 65 is 11.2% of the population. The median household income is $72,917, per capita income is $32,432. There are a total of 231 housing units with 87.9% owner occupied. Education includes 40.7% of residents that are high school graduates and 19.0% with a bachelor's degree or higher. The average temperature in Casco in the summer is 66 degrees, and in the winter 17 degrees.