Wadena is located in Fayette county Iowa with a geographic area of 0.8 square miles. The total population in Wadena is 220 with 57.3% male and 42.7% female. Children under age 5 represent 7.7% of the population, under age 18 equal 21.8% of the population and over age 65 is 23.2% of the population. The median household income is $52,813, per capita income is $33,815. There are a total of 97 housing units with 76.3% owner occupied. Education includes 35.1% of residents that are high school graduates and 13.4% with a bachelor's degree or higher. The average temperature in Wadena in the summer is 69 degrees, and in the winter 23 degrees.