Oak Lawn is a village in Cook County, Illinois, United States. The population was 56,690 at the 2010 census. Oak Lawn is a suburb of Chicago, located southwest of the city. It shares borders with the city in two areas but is surrounded mostly by other suburbs.
Oak Lawn is located at 41°42′54″N 87°45′12″W (41.715082, −87.753401). According to the 2010 census, Oak Lawn has a total area of 8.59 square miles (22.25 km2), all land.
As of the 2010 United States Census, there were 56,690 people living in the village. The racial makeup of the village was 85.2% White, 5.2% African American, 0.2% Native American, 2.2% Asian, 5.3% from other races, and 1.9% from two or more races. Hispanic or Latino people of any race were 14.3% of the population
As of the 2000 United States Census, there were 55,245 people, 22,220 households, and 14,554 families living in the village. The population density was 6,427.3 people per square mile (2,480.3/km2). There were 22,846 housing units, at an average density of 2,657.9 per square mile (1,025.7/km2).