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 the (41.715082, -87.753401). According to the 2010 census, Oak Lawn has a total area of 8.59 square miles (22.25 km 2 ), all land.
As of the 2000 United States Census, there were 55,245 people, 22,220 households, and 14,554 families residing 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). The racial makeup of the village was 93.35% White, 1.22% African American, 0.17% Native American, 1.73% Asian, 0.01% Pacific Islander, 1.64% from other races, and 1.90% from two or more races. Hispanic or Latino of any race were 5.33% of the population, including 4.3% of Mexican descent. 
The top five ancestries reported in Oak Lawn as of the 2000 census were Irish (30.4%), German (19.5%), Polish (19.3%), Italian (9.7%) and English (4.4%).  One of the town's streets pays tribute to its Polish American heritage through its name of Deblin Lane after Dęblin, Poland.
There were 22,220 households out of which 25.8% had children under the age of 18 living with them, 52.0% were married couples living together, 10.1% had a female householder with no husband present, and 34.5% were non-families. 30.9% of all households were made up of individuals and 17.0% had someone living alone who was 65 years of age or older. The average household size was 2.46 and the average family size was 3.14. 
In the village, the population was spread out with 21.9% under the age of 18, 7.2% from 18 to 24, 26.2% from 25 to 44, 22.9% from 45 to 64, and 21.7% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 88.3 males. For every 100 females age 18 and over, there were 84.2 males. 
The median income for a household in the village was $56,185, and the median income for a family was $71,413. Males had a median income of $53,782 versus $41,904 for females. The per capita income for the village was $27,230  . About 3.9% of families and 5.4% of the population were below the poverty line, including 6.7% of those under age 18 and 4.6% of those age 65 or over. 
The village government consists of a village president and six village trustees. The six trustees represent the six districts within the village and are elected to four-year terms by the voters in each of their respective districts. The current village president of Oak Lawn is Doctor Sandra Bury who was elected in April 2013 as the leader of a group of Trustees known as "Oak Lawn First" who defeated incumbent Mayor Dave Heilmann and his slate of candidates.
Oak Lawn is in Illinois's 3rd congressional district.
Early Oak Lawn
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, but in 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. 
Birth of Oak Lawn
In 1909, Oak Lawn officially became an incorporated village. The following years saw 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.  In addition, 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, an initial 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. 
Oak Lawn comes of age
After World War II, with veterans returning home to take 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. Initially drawing 25,000 people, the “Western” themed celebration brought in over 100,000 attendees in 1952. This year saw Jack Brickhouse as 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.  The 1950s also saw the shift to a Village Managerial Government, 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.  However, there was a decrease in residents in the 1980s, and an aging population led to the closure of several schools during this time. In response, the village began a process of re-development to counteract the decrease. This re-development has focused primarily on businesses and structures in the core area of Oak Lawn, around 95th Street between Cicero Avenue and Central Avenue.
On April 21, 1967, a tornado touched down at 105th and Kean Avenue in Palos Hills, 5 miles (8 km) west of Oak Lawn. There were no deaths in Palos Hills, although a number of homes were destroyed and two transmission towers collapsed. After rising from the ground, the tornado touched down again at the Starlite Drive-In Theater at 6400 West 95th Street. With winds estimated to be over 200 miles per hour (320 km/h), the tornado tore through Oak Lawn, tossing cars and buses in the air. After cutting Oak Lawn Community High School in half, it moved past St. Gerald's to 91st and Cicero Avenue, heavily damaging the Airway Trailer Park and the Oak Lawn Roller Rink before rising from ground level. It touched down again in nearby Hometown, Evergreen Park, and Chicago before dissipating over Lake Michigan. In just sixteen minutes, the storm left a 16-mile (26 km) path of destruction and over 30 people lost their lives. 
Healthcare, education and churches
Oak Lawn is known for its community hospital, which serves the residents of Chicago and its suburbs. Christ Community Hospital (now known as Advocate Christ Medical Center) was built in Oak Lawn in 1960 and has expanded with the development of Hope Children's Hospital, along with becoming a part of Advocate Health Care. Christ Hospital also has a state-of-the-art Level 1 trauma center, providing trauma patients with advanced emergency medical care. The emergency department treats more patients than any other hospital in Illinois.
Oak Lawn has public education schooling children from K–5 in its many elementary schools, including Kolb, Lieb, Harnew, Columbus Manor, Covington, Hannum, Hometown, Kolmar, and Sward. Oak Lawn has two public middle schools. The first is Oak Lawn–Hometown Middle School, which replaced Douglas A. McGugan Junior High School in 2005 (now leased to South Side Baptist Church and School and Christ Hospital's EMS training program). The second public middle school is Simmons Middle School. There are two public high schools, Oak Lawn Community High School and Harold L. Richards High School. The two high schools enroll students mostly from Oak Lawn, Hometown, Bridgeview, Chicago Ridge, Calumet Park, and Robbins.
Catholic grammar schools include St. Louis de Montfort, St. Germaine, St. Catherine, St. Linus, and St. Gerald.
There is also a Christian school at 101st Street and Central Avenue named Southwest Chicago Christian School.
There are many churches in Oak Lawn some include: Calvin Christian Reformed Church, First Christian Reformed Church of Oak Lawn, First United Methodist Church of Oak Lawn, South Side Baptist Church, Pilgrim Faith United Church of Christ, St. Catherine of Alexandria, St. Germaine, St. Linus, St. Louis de Montfort, The Family of St. Gerald, St. Nicholas Greek Orthodox Church, and Wesleyan Community Church.
Oak Lawn maintains an expansive . From the small corner play lots to the 38-acre (150,000 m 2 ) Centennial Park, there are over 300 acres (1.2 km 2 ) of parks, recreational facilities and open land.
These include playgrounds, walking paths, baseball fields, basketball, volleyball and tennis courts, plus outdoor swimming pools, an indoor ice arena, two fitness centers, and an 18-hole golf course. Each area in Oak Lawn has its own recreational area, totaling 22 parks.
The 18-hole Stony Creek Golf Course features 5,004 yards of golf from the longest tees for a par of 65. Designed by Carl Getz, the golf course opened in 1982. The facility features include a miniature golf course, banquet facilities, pro shop, bocce courts, horseshoe pits, PGA instruction, and a 44-station driving range.
Starting in 2002, downtown Oak Lawn (95th Street between Tulley 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 . 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 , and several new retail and service facilities.
Oak Lawn stop sign program
In mid 2007, Oak Lawn began hanging additional messages to the city stop signs in an attempt to have drivers obey the signs. The signs were the idea of the city President, and local residents are encouraged to submit their own ideas. Found throughout the village, the signs garnered attention with the press. 
The Federal Highway Administration (FHWA) and IDOT voiced their concerns about the use of these nonconforming stop signs, and as such the village removed them in April 2008.  Initially, the mayor refused to remove the signs, but IDOT threatened to withhold millions of dollars in funding for infrastructure.
- Diandra Asbaty (born 1980), professional bowler; Team USA member and spokesperson for USBC
- Brian Bogusevic (born 1984), former outfielder for Chicago Cubs 
- Tim Byrdak (born 1973), Major League Baseball pitcher 1998 to 2013; born in Oak Lawn
- Kevin Cronin (born 1951), lead vocalist for rock band REO Speedwagon 
- David Diehl (born 1980), football player, two-time Super Bowl champion for New York Giants 
- Mark Donahue, football player, lineman for Cincinnati Bengals, 2-time Consensus All-American at University of Michigan
- Dan Donegan, guitarist for band Disturbed
- Michael Flatley (born 1958), Irish step dancer; attended St. Linus and Brother Rice High School. 
- Jack Gwynne, illusionist and actor, died in Oak Lawn (1969)
- David A. Johnston, volcanologist, killed during 1980 Mount St. Helens eruption
- Benn Jordan, recording artist known as The Flashbulb ; attended Oak Lawn Community High School
- C.J. Kupec, basketball player, Oak Lawn High School star, played for Michigan and NBA's Los Angeles Lakers
- Steve Kmak, former bassist for Disturbed
- Rob Mackowiak, player for several Major League Baseball teams 
- Bobby Madritsch, former pitcher for Seattle Mariners
- Rory Markham, UFC and IFL mixed martial arts fighter
- Mike Mollo, heavyweight boxer
- Bryan Rekar, former pitcher for Colorado Rockies, Tampa Bay Devil Rays, and Kansas City Royals ; born in Oak Lawn
- Marc Rzepczynski, pitcher for Seattle Mariners ; born in Oak Lawn
- Pat Sajak, longtime host of Wheel of Fortune
- Dwyane Wade, guard for Cleveland Cavaliers and three-time NBA champion with Miami Heat, attended Richards High School in Oak Lawn
- Kanye West, rapper and producer, attended Polaris School for Individual Education