Chicago, situated on Lake Michigan's western shore, is the most populous city in Illinois and the Midwest. As the third-largest city in the United States with a population of 2.74 million (2020), it anchors a metropolitan area of 9.41 million residents, also the nation's third-largest. Chicago serves as the county seat of Cook County, the second-most populous county in the U.S.
Chicago's iconic flag was adopted. City employees owe millions in unpaid debt, not being forced to pay. Illinois faces financial challenges with quick hitting news.
Around 1900 marked the end of the period from the Great Chicago Fire that would become known as the Chicago Literary Renaissance, which had a lasting influence on American literature.
By 1900, Chicago was the fifth largest city in the world behind Berlin, Paris, New York, and London.
In 1900, Chicago resolved the problem of sewage contamination by completing a major engineering project that reversed the flow of the Chicago River, directing it away from Lake Michigan.
In 1900, Chicago's flourishing economy attracted large numbers of new immigrants from Europe and migrants from the Eastern United States. More than 77% of the population was either foreign-born or born in the United States of foreign parentage.
In 1901, William Rainey Harper was instrumental in the creation of the junior college concept, establishing nearby Joliet Junior College as the first in the nation.
Since 1901, The Chicago White Sox have played on the South Side continuously since 1901. They also won the American League pennant.
In 1905, Benjamin Ferguson established a trust, funding outdoor public art in Chicago.
In 1906, the Chicago Cubs and the Chicago White Sox faced each other in a World Series.
In 1907, Chicago hosted the Brass Era car builder Bugmobile, which was founded in the city.
In 1908, the Chicago Cubs last won a World Series until 2016.
Between 1910 and 1920, Chicago's black population doubled as part of the Great Migration.
Between 1910 and 1930, the African American population of Chicago increased dramatically.
By 1910, over 20 railroads operated passenger service out of six different downtown terminals in Chicago, which had become the nation's railroad hub in the 1800s.
In 1912, Harriet Monroe founded Poetry magazine, which discovered poets such as Gwendolyn Brooks and published T. S. Eliot's "The Love Song of J. Alfred Prufrock".
In 1919, Chicago experienced racial tensions and violence, including the Chicago race riot.
In 1919, the ratification of the 18th amendment ushered in the beginning of the gangster era, with the production and sale of alcoholic beverages becoming illegal.
Between 1920 and 1930, Chicago's black population doubled again, continuing the trend of the Great Migration.
Chicago significantly grew in size and population by incorporating many neighboring townships between 1851 and 1920.
From 1920 to 1921, Chicago was affected by a series of tenant rent strikes, which led to the formation of the Chicago Tenants Protective association.
From 1920 to 1921, Chicago was affected by a series of tenant rent strikes, which led to the passage of the Kessenger tenant laws.
In 1924, Chicago was the first American city to have a homosexual-rights organization, called the Society for Human Rights.
In 1926, the Chicago Blackhawks of the National Hockey League (NHL) began play.
In 1927, William Thompson was voted into office, the last time the citizens of Chicago elected a Republican mayor.
In 1928, the city of Chicago witnessed a tax revolt.
In 1929, Chicago was the location of the infamous St. Valentine's Day Massacre, where Al Capone sent men to kill members of a rival gang.
Between 1910 and 1930, the African American population of Chicago increased dramatically.
By 1930, two-thirds of Chicago's black population lived in areas that were 90% black in racial composition.
By 1930, two-thirds of Chicago's black population lived in sections of the city which were 90% black in racial composition.
The Republican political machine in Chicago was utterly destroyed by the economic crisis, and every mayor since 1931 has been a Democrat.
By 1933 over 50% of industrial jobs in Chicago had been lost, and unemployment rates amongst blacks and Latinos in the city were over 40% due to the Great Depression.
The fiscal crisis in Chicago was resolved by 1933, and at the same time, federal relief funding began to flow into the city.
The gangster era, which began in 1919, roughly spans until 1933 when Prohibition was repealed.
On July 24, 1934, Chicago recorded its highest official temperature reading of 105 °F (41 °C).
In 1934, the city of Chicago celebrated its centennial by hosting the Century of Progress International Exposition World's Fair.
By 1935, the Workers Alliance of America began organizing the poor, workers, and the unemployed in Chicago.
In the spring of 1937, Republic Steel Works witnessed the Memorial Day massacre of 1937 in the neighborhood of East Side in Chicago.
Starting in 1939, during World War II, Chicago produced more steel than the United Kingdom every year until 1945.
On December 2, 1942, physicist Enrico Fermi conducted the world's first controlled nuclear reaction at the University of Chicago as part of the Manhattan Project.
The building of the Chicago boulevard system continued intermittently until 1942.
By the 1950 census, Chicago's population reached its highest recorded level of 3.6 million.
In 1950, Chicago's population peaked at over 3.6 million.
In 1953, Moore created Large Interior Form, which became part of Chicago's public art collection.
Richard J. Daley, a Democrat, was elected mayor of Chicago in 1955.
In 1956, sociologists at the University of Chicago established O'Hare as one of the 75 distinct community areas.
In 1956, the Lithuanian Opera Company of Chicago was founded by Lithuanian Chicagoans to present operas in Lithuanian.
In 1956, the city of Chicago conducted its last major expansion when it annexed the land under O'Hare airport.
In 1966, Martin Luther King Jr. and Albert Raby led the Chicago Freedom Movement, which resulted in agreements with Mayor Richard J. Daley.
On April 21, 1967, an F4 Oak Lawn tornado moved through Chicago's South Side, continuing as a waterspout over Lake Michigan.
In 1968, Chicago hosted the tumultuous Democratic National Convention, marked by physical confrontations between police, anti-war protesters, journalists and bystanders.
In 1968, members of the Chicago Imagists, such as Roger Brown, Leon Golub, Robert Lostutter, Jim Nutt, and Barbara Rossi produced bizarre representational paintings.
Since 1968, the Joseph Jefferson Awards have been given annually to acknowledge excellence in theater in the Chicago area.
In 1969, members of the Chicago Imagists, such as Roger Brown, Leon Golub, Robert Lostutter, Jim Nutt, and Barbara Rossi produced bizarre representational paintings.
From 1973, Robert P. Hanrahan represented a significant portion of Chicago in the United States House of Representatives for one term.
In 1974, the Sears Tower (now known as the Willis Tower) became the world's tallest building.
Until 1975, Robert P. Hanrahan represented a significant portion of Chicago in the United States House of Representatives.
Since 1977, the Chicago Marathon has been held each year except for 1987.
In 1979, Jane Byrne was elected as the city's first female mayor of Chicago.
In 1980, sociologists at the University of Chicago established Edgewater as one of the 75 distinct community areas.
In 1983, Harold Washington became the first black mayor of Chicago.
In 1983, the independents gained control of city government with the election of Harold Washington.
On January 20, 1985, Chicago experienced its lowest official temperature, recorded at −27 °F (−33 °C).
Harold Washington was in office in 1987.
In 1987, Harold Washington was re-elected as mayor of Chicago but died of a heart attack soon after.
In 1987, a half marathon was run in place of the Chicago Marathon.
In September 2012, the Chicago Teachers Union went on strike for the first time since 1987, citing issues related to pay, resources, and other concerns.
From 1989, Chicago was under the leadership of its longest-serving mayor, Richard M. Daley.
In 1989, Richard M. Daley, son of Richard J. Daley, was elected mayor of Chicago.
By the time of the official census count in 1990, Los Angeles overtook Chicago as the United States' second largest city.
In 1990, Chicago's South Side and its suburbs constituted the largest black majority region in the United States.
In 1992, a construction accident near the Kinzie Street Bridge caused a breach connecting the Chicago River to an abandoned freight tunnel system, leading to a flood and significant damages.
Since 1992, with Chicago's Democratic vote the state of Illinois has been "solid blue" in presidential elections.
The second Parliament of the World's Religions was held in Chicago in 1993.
In 1994, the United States hosted a successful FIFA World Cup, with games played at Soldier Field.
During the 1995 heatwave, Midway Airport reached 109 °F (43 °C) and recorded a heat index of 125 °F (52 °C).
From 1995 to 2008, the city had a blue bag program to divert recyclable refuse from landfills.
From 1995, Michael Patrick Flanagan represented a significant portion of Chicago in the United States House of Representatives for one term.
Since their founding in 1997, the Chicago Fire FC has won one league title and four U.S. Open Cups.
Until 1997, Michael Patrick Flanagan represented a significant portion of Chicago in the United States House of Representatives.
Since 1999, Judge Mathis has filmed his syndicated arbitration-based reality court show at the NBC Tower.
Chicago experienced a population rise for the 2000 census.
As of 2002, severe freight train congestion caused trains to take as long to get through the Chicago region as it took to get there from the West Coast of the country.
In 2003, Robb Report named Chicago the country's "most exceptional dining destination".
In 2005, O'Hare was the world's busiest airport by aircraft movements and the second-busiest by total passenger traffic.
Before the 2006 WNBA season began, the Chicago Sky was founded as a professional basketball team.
A 2007 report by the University of Chicago Cultural Policy Center ranked Chicago third among metropolitan U.S. areas in "size of music industry" and fourth among all U.S. cities in "number of concerts and performances".
From 1995 to 2008, the city had a blue bag program to divert recyclable refuse from landfills.
In 2008, Chicago agreed to a 75-year, $1.16 billion deal to lease its parking meter system to Chicago Parking Meters LLC.
In 2008, the Merchandise Mart, once the largest building in the world, no longer had its own zip code.
Since 2009, Chicago has relinquished rights to its public street parking.
According to U.S. Department of Transportation, the volume of imported and exported goods transported via rail to, from, or through Chicago is forecast to increase nearly 150 percent between 2010 and 2040.
By 2010, Chicago's population decreased to under 2.7 million.
On February 23, 2011, Rahm Emanuel won the mayoral election in Chicago.
On May 16, 2011, Rahm Emanuel was sworn in as mayor of Chicago.
In the winter of 2011, Chicago experienced a notable blizzard.
In September 2012, the Chicago Teachers Union went on strike for the first time since 1987, citing issues related to pay, resources, and other concerns.
Chicago officially became a "de jure" sanctuary city in 2012 with the passage of the Welcoming City Ordinance.
From 2012 to 2019, approximately one third, or 33 Chicago alderpersons, were convicted on corruption charges.
In July 2013, the bicycle-sharing system Divvy was launched with 750 bikes and 75 docking stations.
From 2013, Chicago was ranked the nation's top metropolitan area for corporate relocations, a status it maintained for six consecutive years.
In 2013, Chicago Public Schools had an enrollment exceeding 400,545 students, making it the third-largest district in the U.S.
In 2013, Chicago experienced significant variations in violent crime rates across different areas of the city, with more economically developed areas exhibiting lower rates and other sections facing much higher rates of crime. The overall violent crime rate was 910 per 100,000 people, and the murder rate was 10.4 per 100,000, however high crime districts had 38.9 murders while low crime districts had 2.5 murders per 100,000.
In 2013, a report from the Office of the Legislative Inspector General indicated that over half of Chicago's elected alderpersons accepted illegal campaign contributions.
In 2013, reports indicated that most of Chicago's violent crime stemmed from gangs vying for control of drug-selling territories, specifically tied to the activities of the Sinaloa Cartel.
In 2013, the Chicago Stars FC joined the National Women's Soccer League (NWSL).
Since the 2013 legalization of same-sex marriage in Illinois, over 10,000 same-sex couples have wed in Cook County, a majority of them in Chicago.
According to 2014 data, Chicago's "choice system" sorts students of different achievement levels into different schools, be they high, middle, or low performing.
According to a 2014 study by the Pew Research Center, Christianity is the most prevalently practiced religion in Chicago (71%).
In 2014 the Catholic Church was the largest individual Christian denomination (34%), with the Roman Catholic Archdiocese of Chicago being the largest Catholic jurisdiction.
In 2014, Chicago attracted 50.17 million domestic leisure travelers, 11.09 million domestic business travelers, and 1.308 million overseas visitors, contributing over US$13.7 billion to Chicago's economy.
In 2014, U.S. News & World Report ranked Rush University Medical Center as the second best hospital in the Chicago metropolitan area.
Non-Christian faiths accounted for 7% of the religious population in 2014. Judaism had at least 261,000 adherents, which is 3% of the population.
In 2015, 26.5 percent of Chicago households were without a car.
In 2015, Rahm Emanuel won re-election as mayor of Chicago.
In 2015, the steel industry in Chicago employed just 28,000 workers, a significant decrease from its peak of 250,000 during the 1960s.
In 2016, the Chicago Cubs won a World Series, ending the longest championship drought in American professional sports since 1908.
In 2016, the percentage of Chicago households without a car increased slightly to 27.5 percent.
As of September 2017 estimates, Chicago has the third-largest gross metropolitan product in the United States, totaling about $670.5 billion.
A 2017 study by Walk Score ranked Chicago the sixth-most walkable of the fifty largest cities in the United States.
For 2017-18, U.S. News & World Report ranked Northwestern Memorial Hospital as the best hospital in the Chicago metropolitan area.
In 2017, Chicago exchanges traded 4.7 billion in derivatives.
In 2017, WYCC 20, Chicago's second PBS member station, ended its affiliation with PBS.
As of 2018, Windy City Live is Chicago's only daytime talk show.
In 2018, Chicago ranked seventh globally for the highest number of ultra-high-net-worth residents, with roughly 3,300 residents worth more than $30 million.
In 2018, the Chicago Department of Health estimated that 7.5% of the adult population, approximately 146,000 Chicagoans, were LGBTQ.
In 2018, the Chicago Park Boulevard System Historic District was listed on the National Register of Historic Places.
Through 2018, Chicago was ranked the nation's top metropolitan area for corporate relocations for six consecutive years, starting in 2013.
Beginning in January 2019, Newsy began producing 12 of its 14 hours of live news programming per day from its new facility in Chicago.
In January 2019, a polar vortex event occurred in Chicago, nearly breaking the city's cold record.
In May 2019, The City of Chicago announced its Chicago's Electric Shared Scooter Pilot Program, scheduled to run from June 15 to October 15.
As of July 2019, Divvy operated 5800 bicycles at 608 stations.
During July 2019, Chicago experienced a heat wave, with dew point temperatures reaching nearly 80 °F (27 °C).
According to U.S. census estimates as of July 2019, Chicago's largest racial or ethnic group is non-Hispanic White at 32.8% of the population, followed by Blacks at 30.1% and the Hispanic population at 29.0%.
From 2012 to 2019, approximately one third, or 33 Chicago alderpersons, were convicted on corruption charges.
In 2019, Lori Lightfoot was elected to succeed Emanuel as mayor, becoming the city's first African American woman and openly LGBTQ mayor.
In 2019, Nexstar Media Group acquired Tribune Broadcasting, obtaining a majority stake in The CW network, which owns WGN.
A 2020 study estimated the total Jewish population of the Chicago metropolitan area, both religious and irreligious, at 319,500.
Chicago experienced a population increase again for the 2020 census.
In 2020, Chicago's crime rate was 3,926 per 100,000 people.
In 2020, the city of Chicago had a population of 2.74 million, making it the third-most populous city in the United States.
In 2021, Chicago was recognized as the fourth-most walkable large city in the United States. Many residential streets feature wide patches of grass or trees between the street and sidewalk, enhancing pedestrian safety.
In 2021, Chicago's minimum wage for non-tipped employees reached $15, making it one of the highest in the nation.
According to the 2022 American Community Survey, the specific ancestral groups having 10,000 or more persons in Chicago were recorded.
According to the U.S. Census Bureau's American Community Survey data estimates for 2022, the median income for a household in the city was $70,386, and the per capita income was $45,449.
In 2022, three Fortune 500 companies left Chicago, reducing the city's total to 35, but still second to New York City.
The rights of the parking ticket lease end in 2081, and since 2022 have already recouped over $1.5 billion in revenue for Chicago Parking Meters LLC investors.
On May 15, 2023, Brandon Johnson assumed office as the 57th mayor of Chicago.
In 2024, Chicago was a major destination for tourism, attracting 55 million people to its various cultural institutions, Lake Michigan beaches, restaurants, and other tourist sites.
Beginning in June 2026, the RTA will be replaced by the Northern Illinois Transit Authority (NITA).
According to U.S. Department of Transportation, the volume of imported and exported goods transported via rail to, from, or through Chicago is forecast to increase nearly 150 percent between 2010 and 2040.
The rights of the parking ticket lease end in 2081, and since 2022 have already recouped over $1.5 billion in revenue for Chicago Parking Meters LLC investors.
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