Oakdale is located in Washington county Illinois with a geographic area of 1.6 square miles. The total population in Oakdale is 291 with 47.1% male and 52.9% female. Children under age 5 represent 5.8% of the population, under age 18 equal 29.6% of the population and over age 65 is 10.0% of the population. The median household income is $80,893, per capita income is $28,628. There are a total of 103 housing units with 90.3% owner occupied. Education includes 18.4% of residents that are high school graduates and 17.5% with a bachelor's degree or higher. The average temperature in Oakdale in the summer is 74 degrees, and in the winter 27 degrees.
