Oakdale is a village in Washington County, Illinois, United States.

[3] According to the 2010 census, Oakdale has a total area of 1.64 square miles (4.25 km2), all land.

The racial makeup of the village was 96.71% White, 0.47% Native American, and 2.82% from two or more races.

25.9% of all households were made up of individuals, and 12.9% had someone living alone who was 65 years of age or older.

About 4.7% of families and 3.0% of the population were below the poverty line, including 4.2% of those under the age of eighteen and none of those 65 or over.