Irondale is located in Washington county Missouri with a geographic area of 0.5 square miles. The total population in Irondale is 575 with 62.3% male and 37.7% female. Children under age 5 represent 8.7% of the population, under age 18 equal 36.0% of the population and over age 65 is 6.4% of the population. The median household income is $22,250, per capita income is $14,804. There are a total of 219 housing units with 77.2% owner occupied. Education includes 26.5% of residents that are high school graduates and 5.9% with a bachelor's degree or higher. The average temperature in Irondale in the summer is 76 degrees, and in the winter 32 degrees.