For Sale, Ground Lease, Or Built-to-Suit. The site is located at the southwest corner of 87th St & Ridgeland Ave in a Major Shopping & Business District. Businesses along Ridgeland Ave include Jewel Food Store, Dunkin Donuts, Dollar Tree, Atheltico, and many other national and regional Businesses. Oak Lawn is a village in Cook County, Illinois, United States. The population was 58,362 at the 2020 census. Oak Lawn is a southwest suburb of Chicago, located southwest of the city. It shares borders with the city in two areas but is surrounded mostly by other densely populated suburbs.