Red oak is located in Montgomery county Iowa with a geographic area of 3.9 square miles. The total population in Red oak is 5,323 with 48.0% male and 52.0% female. Children under age 5 represent 6.3% of the population, under age 18 equal 24.2% of the population and over age 65 is 20.0% of the population. The median household income is $50,524, per capita income is $29,202. There are a total of 2,378 housing units with 67.5% owner occupied. Education includes 37.1% of residents that are high school graduates and 18.2% with a bachelor's degree or higher. The average temperature in Red oak in the summer is 73 degrees, and in the winter 23 degrees.
