Oakdale is a city in Washington County, Minnesota, United States. It is a suburb of Saint Paul and is on the eastern side of the Twin Cities Metropolitan area. The population was 27,378 at the 2010 census. Oakdale is the 32nd largest city in Minnesota by population.
Oakdale lies entirely within the North St. Paul–Maplewood–Oakdale school district, ISD 622, and the city's students are split into two high schools within the district. Tartan Senior High School is within the city's boundaries, and serves the southern half of Oakdale. The city's northern residents are served by North High School in North St. Paul.
Imation (now known as Glassbridge) World Headquarters was in Oakdale.