Oak Lawn is a village in Cook County, Illinois, United States, adjacent to Chicago. It is the 22nd-most populous municipality in Illinois, with a population of 58,362 as of the 2020 census. Oak Lawn was first settled in 1835 and later incorporated in 1909. The village serves as a major medical and economic anchor for the southwest suburbs, notably hosting Advocate Christ Medical Center, one of the largest hospitals and Level I trauma centers in the state of Illinois.
History
Founding
In August 1835, James B. Campbell purchased the land stretching between Cicero Avenue and Central Avenue from 95th Street to 103rd Street. It is unclear what Campbell's intentions with the area were, but by 1840, he had lost a court battle with the Illinois State Bank and his land was sold in a public auction. John Simpson, a prominent figure in early Oak Lawn history, bought the northern half of the property in 1842. By 1859, the recently incorporated government of Worth Township paid for the construction of Black Oak Grove Road, an early name for 95th Street. Black Oak Grove is also the earliest known name of the area that would become Oak Lawn. It was later shortened to Black Oak or Black Oaks. Before this however, the area now known as Oak Lawn was, briefly during the early 1800s, called Agnes. It was also on some occasion referred to as Oak Park.
1880 saw the arrival of what would become the Wabash Railroad 6th district. By 1882, the post office, train depot and surrounding community became known simply as Oak Lawn. Over the next two decades, the area grew in population as more homes were built and local business sprang into being. As the area continued to grow, many residents visited Englewood by train to shop. Oak Lawn residents also made income during early days by selling their farm and dairy products to various markets in Chicago.
Incorporation
In 1909, Oak Lawn was incorporated as a village. The following years, there were major improvements to local infrastructure and government services, such as the introduction of the police magistrate and village marshal, along with the building of a village hall and jailhouse. Electric lights were brought to 95th Street in 1911, the volunteer fire department began in 1923, Oak Lawn's first bank opened in 1925, and the Community High School District 218 was formed. The population had grown to 2,045 by 1930, and civic improvements were steadily made over the next decade. In 1934, a collection of one hundred books was the beginning of the Oak Lawn Public Library. By 1935, President Franklin D. Roosevelt created the Works Progress Administration as part of the New Deal, which supported a variety of public works, including libraries. With the help of a WPA grant, the new library opened its doors in 1936.
Post 1945
After World War II, with veterans returning home and taking advantage of the G.I. Bill, Oak Lawn experienced a major population boom. Beginning in 1949, Oak Lawn Round-Up Days became an annual event and helped to promote the village. It started with 25,000 people, and the Western-themed celebration brought in over 100,000 attendees in 1952. In this year, Jack Brickhouse was master of ceremonies, and the parade was televised on WGN-TV. By 1957, Round-Up Days had become too large, and the next year a final scaled-down version was held.
In the 1950s, a village managerial government began, and a new library and fire station were constructed. By 1960, there were nearly 20,000 residents in Oak Lawn.
On April 21, 1967, a tornado touched down in Oak Lawn that is recorded as one of the worst to strike an urban area. Roughly 900 buildings were damaged or destroyed, and over 30 people were killed.
The town was rebuilt in the coming years, and witnessed further population growth, peaking at 63,500 between 1973 and 1976.
Downtown redevelopment
thumb|right|Oak Lawn Metra station
Starting in 2002, downtown Oak Lawn (95th Street between Tulley Avenue and 55th Court) became the target of a massive redevelopment program; properties on the north and south sides of 95th Street were demolished. Eventually, several square blocks were leveled, making room for several multistory, high-end condominium complexes with retail space on the main floors. Part of the project was the expansion of the Metra commuter train station that houses a retail/office center and a new children's museum. This complex also includes a multistory parking garage. Downtown Oak Lawn as seen today bears little resemblance to the downtown from 2002. It now features modern high-rise buildings, new shopping areas, a large contemporary Metra train station, and several new retail and service facilities.
Geography
According to the 2010 census, Oak Lawn has a total area of , all land.