Irene is located in Clay county South dakota with a geographic area of 0.3 square miles. The total population in Irene is 549 with 41.9% male and 58.1% female. Children under age 5 represent 5.8% of the population, under age 18 equal 29.7% of the population and over age 65 is 19.5% of the population. The median household income is $47,031, per capita income is $20,988. There are a total of 203 housing units with 64.0% owner occupied. Education includes 33.5% of residents that are high school graduates and 20.7% with a bachelor's degree or higher. The average temperature in Irene in the summer is 73 degrees, and in the winter 15 degrees.