Pittsburgh is a city in southwestern Pennsylvania, serving as the county seat of Allegheny County. It is the second-most populous city in Pennsylvania and the 68th-most populous in the U.S., with a population of over 300,000 as of 2020. Situated at the confluence of the Allegheny and Monongahela Rivers, which form the Ohio River, Pittsburgh anchors a metropolitan area of nearly 2.5 million residents. This makes it the largest metro area in both the Ohio Valley and Appalachia, the second-largest in Pennsylvania, and the 26th-largest in the U.S.
On July 1, 1901, the record warm daily minimum temperature was 82 °F (28 °C).
In 1901, J. P. Morgan and Elbert H. Gary merged Carnegie Steel Company and several others into U.S. Steel.
In 1901, the Pittsburgh Pirates claimed a pre-World Series title.
In 1902, the Pittsburgh Pirates claimed a pre-World Series title.
In 1907, Allegheny City was annexed, becoming the North Side of Pittsburgh.
By 1910, Pittsburgh was the nation's eighth-largest city and accounted for between one-third and one-half of national steel output.
In 1911, Magee Womens Hospital was established in Pittsburgh.
In 1911, after a public campaign, the federal decision to drop the 'h' from 'Pittsburgh' was reversed.
In 1912, Duquesne Light, one of the original power companies founded by George Westinghouse, was founded.
In 1912, the Duquesne University Red Masquers were founded, becoming the oldest, continuously producing theater company in Pennsylvania.
In 1914, the Pittsburgh Panthers women's basketball program began play before being reintroduced in 1970.
In May 1918, the Pittsburgh Agreement was subscribed between Czech and Slovak nationalities, concerning the future foundation of Czechoslovakia.
The 1918-1919 season saw the lowest snowfall ever, with 8.8 in (22 cm).
The Nabisco factory in Pittsburgh was constructed from 1918-1998.
In 1919, Andrew Carnegie's Pittsburgh Locomotive and Car Works, which manufactured for the rail industry, closed.
On November 2, 1920, KDKA 1020 AM, the world's first commercially licensed radio station, began airing in Pittsburgh.
In 1921, The Pittsburg Press finally started spelling the city with an 'h'.
In 1924, the NHL awarded one of its first franchises to Pittsburgh, due to the success of the Pittsburgh Yellow Jackets.
In 1927, the Pittsburgh Steelers were named after the distribution company the Pittsburgh Steeling Company established in that same year.
In 1928, the University of Pittsburgh (Pitt) won a pre-NCAA tournament National Championship in basketball.
In 1930, Pittsburgh experienced its lowest annual precipitation at 22.65 in (575 mm).
In 1930, the University of Pittsburgh (Pitt) won a pre-NCAA tournament National Championship in basketball.
Since the 1933 election, Democrats have been elected consecutively to the mayor's office, with a few exceptions.
In March 1936, Pittsburgh suffered severe flooding.
In 1936, the Pittsburgh Hornets farm team was established and would last until 1967.
From 1937 to 1945, the Pittsburgh Pirates played in the National Basketball League (NBL).
In 1937, the Laurel Valley Golf Club hosted the PGA Championship.
By 1940, non-Hispanic whites were 90.6% of the city's population.
In 1940, Duquesne University reached the NCAA tournament Final Four.
In 1941, the University of Pittsburgh (Pitt) reached the NCAA tournament Final Four.
From 1947 to 1948, the Pittsburgh Ironmen were part of the inaugural season of the NBA.
In 1950, 680,000 people lived in the city proper.
The 1950-1951 season saw the highest snowfall ever, with 80 in (200 cm).
On April 1, 1954, WQED 13 was established in Pittsburgh as the first community-sponsored television station and the fifth public station in the United States.
In 1954, Allegheny General Hospital (AGH) was among the first to administer Cobalt therapy.
In 1955, Duquesne University won the National Invitation Tournament (NIT) title.
In 1955, the polio vaccine developed by Jonas Salk came into use.
In 1956, the Conway Rail Yard became the largest freight rail center in the world.
In 1956, the Exposition Building and Duquesne Gardens, which had offered indoor skating since 1896, ceased to offer the service.
From 1957 to 1958, suburban courses such as Laurel Valley Golf Club and the Fox Chapel Golf Club, hosted LPGA Championships.
Pittsburgh's wastewater treatment plant was constructed in 1959.
From 1961 to 1963, the Pittsburgh Rens existed as a basketball team.
Point Park University was founded in 1961 and is well known for its Conservatory of Performing Arts and its Pittsburgh Playhouse.
In 1965, the Fox Chapel Golf Club hosted the PGA Championship.
In 1966, pianist-composer Mary Lou Williams honored her hometown of Pittsburgh with an album featuring Leon Thomas.
In 1967, the Pittsburgh Hornets farm team ended, having been around since 1936.
In 1967, the Pittsburgh Penguins of the NHL were founded and began playing in Pittsburgh.
In 1968, George A. Romero's film "Night of the Living Dead" was released, recognizing Pittsburgh as the birthplace of the modern zombie film genre.
In 1968, Pittsburgh's ABA franchise won the title.
In 1968, the Pittsburgh Pipers, led by Connie Hawkins, won the first American Basketball Association (ABA) championship.
In 1968, the state's first heart transplant was performed.
From 1970 to 1972, the Pittsburgh Condors played in the ABA.
In 1970, the Pittsburgh Panthers women's basketball program was reintroduced after beginning play in 1914.
Non-Hispanic whites were 64.8% of the population in 2010, compared to 78.7% in 1970.
In 1971, the Pittsburgh Pirates were the first Major League team to field an all-minority lineup.
Since 1972, the Pittsburgh Steelers have sold out every home game.
In 1973, a lifelong Democrat ran off the party ticket in the mayoral election.
In 1975, the Laurel Valley Golf Club hosted the Ryder Cup.
In 1977, Pittsburgh launched the "Renaissance II" project, which focused on cultural and neighborhood development.
In 1977, a lifelong Democrat ran off the party ticket in the mayoral election.
In 1980, UPMC announced a $250 million expansion.
In 1980, the Conway Rail Yard was no longer the world's largest freight rail center.
In 1983, the first known cystic fibrosis heart-lung transplant was performed.
In 1984, Allegheny General surgeons pioneered modern brain surgery techniques.
In 1984, the world's first simultaneous liver and heart transplant operation was performed on a child, 6-year-old Stormie Jones.
Since 1984, Pittsburgh has hosted INPEX, the world's largest invention trade show.
In 1985, Starzl arranged the liver transplant of Amie Garrison, and UPMC surgeons revealed a new heart-lung transplant device.
In 1985, the youngest heart-lung transplant was performed on a 9-year-old.
In 1986, UPMC announced a $230 million modernization plan.
On July 16, 1988, Pittsburgh reached 103 °F (39 °C).
In 1989, the world's first heart-liver-kidney transplant was performed.
In 1990, the Pittsburgh Pirates made the first of three consecutive National League Championship Series appearances.
Pittsburgh had the fifth-largest Ukrainian community per the 1990 census.
In 1991, the Pittsburgh Penguins won an Eastern Conference title and a Stanley Cup championship.
In 1992, the Pittsburgh Penguins won an Eastern Conference title and a Stanley Cup championship.
In 1993, the Pittsburgh Pirates began their MLB record of 20 consecutive losing seasons.
On January 19, 1994, Pittsburgh recorded its all-time record low temperature of −22 °F (−30 °C).
July 15, 1995 was the last time Pittsburgh saw a 100 °F (38 °C)+ reading.
In 1995, the Pittsburgh Piranhas reached the CBA Finals.
In 1996, the Italian government approved UPMC's planned Sicily ISMETT branch.
In 1997, the Pittsburgh Pirates' September pennant race featured the franchises' last no-hitter and last award for Sporting News' Executive of the Year.
In 1997, the world's first heart-liver transplant was performed on an infant.
In 1998, the Riverhounds, an American professional soccer team, were founded in Pittsburgh.
In 1998, the first pediatric heart-double lung-liver transplant was performed.
The Nabisco factory in Pittsburgh was constructed from 1918-1998.
In 1999, Hall of Famer Mario Lemieux became the owner of the Pittsburgh Penguins.
In 1999, UPMC's Thomas Detre founded the International Society for Bipolar Disorders in Pittsburgh.
At the 2010 census, the population decreased of 8.6% since 2000.
In 2000, Pittsburgh Public Schools teachers ranked 17th in the nation for highest minimum salary among the 100 largest cities.
In 2000, the Keystone State Wrestling Alliance (KSWA), a professional wrestling promotion, was founded in Pittsburgh.
In 2000, the UPMC Sports Performance Complex opened.
Since 2000, UPMC has been ranked among U.S. News & World Report's "Honor Roll" every year.
In 2002, AGH opened its cancer center.
In 2002, the Pittsburgh Passion, the city's professional women's football team, was established and began playing its home games at Highmark Stadium.
In 2003, the Hillman Cancer Center opened, and UPMC entered into an agreement with IBM.
Since 2003, Pittsburgh has hosted Tekko, a four-day anime convention.
From 2004 to 2008, the Pittsburgh Xplosion played basketball.
In 2004, the remnants of Hurricane Ivan caused record rainfall and occasional floods in low-lying areas of Pittsburgh.
As of 2005, Pittsburgh had 31,000 trees along 900 miles of streets.
In 2005, Pittsburgh hosted the annual world-title Bassmaster Classic fishing competition.
In 2005, The Economist's Global Liveability Ranking placed Pittsburgh as the most or second-most livable city in the United States.
In 2005, suburban courses such as Laurel Valley Golf Club and the Fox Chapel Golf Club, hosted Senior PGA Championships.
Between 2006 and 2011, the Pittsburgh metropolitan statistical area (MSA) experienced over 10% appreciation in housing prices.
In 2006, Luke Ravenstahl was sworn in as mayor at age 26, becoming the youngest mayor in the history of any major American city.
In 2006, the Pennsylvania Film Production Tax Credit was passed, boosting Pittsburgh's film industry.
Since 2006, Anthrocon, the world's largest furry convention, has been held annually at the David L. Lawrence Convention Center in Pittsburgh.
Since 2006, Pittsburgh has hosted Anthrocon, a furry convention.
In 2007, a 25% tax credit incentive was established for film production in Pittsburgh.
In 2007, the annual payroll of the Pittsburgh region's technology industries exceeded $10.8 billion in aggregate.
In 2008, the Pittsburgh Penguins won an Eastern Conference title.
In September 2009, the 2009 G20 Pittsburgh summit was held in Pittsburgh.
From 2009 to 2010, the Pittsburgh Phantoms played basketball.
In 2009, Pittsburgh hosted the G20 summit.
In 2009, Pittsburgh hosted the annual world-title Forrest Wood Cup fishing competition.
In 2009, Pittsburgh won the Sporting News title of "Best Sports City" in the United States.
In 2009, The Economist's Global Liveability Ranking placed Pittsburgh as the most or second-most livable city in the United States.
In 2009, the East Mall public housing complex was demolished and replaced by businesses like Target, cited as evidence of gentrification.
In 2009, the Pittsburgh Penguins won an Eastern Conference title and a Stanley Cup championship.
In 2009, the Pittsburgh Steelers won a league-record sixth Super Bowl.
In 2009, the UPMC Children's Hospital of Pittsburgh opened.
In 2009, the nation's first double hand transplant was performed.
Since 2009, Pittsburgh has hosted the DUG East energy trade show.
According to a 2010 ARDA study, the Pittsburgh metro area included 773,341 "Catholics", 326,125 "Mainline Protestants", 174,119 "Evangelical Protestants", 20,976 "Black Protestants", and 16,405 "Orthodox Christians", with 996,826 listed as "unclaimed" and 16,405 as "other".
At the 2010 census, there were 305,704 people residing in Pittsburgh, a decrease of 8.6% since 2000; 66.0% of the population was White, 25.8% Black or African American, 0.2% American Indian and Alaska Native, 4.4% Asian, 0.3% Other, and 2.3% mixed.
In 2010, Pittsburgh had 1,600 technology companies.
In 2010, UPMC officially adopted Hamot Medical Center in Erie, Pennsylvania.
In 2010, poet Terrance Hayes, who earned his MFA at the University of Pittsburgh, won the National Book Award.
In 2010, the Pittsburgh Penguins moved into the PPG Paints Arena (then known as Consol Energy Center).
In 2010, the first total forearm and hand transplant was performed.
In 2010, there were 143,739 households, out of which 21.9% had children under the age of 18 living with them.
A 2011 analysis valued the annual benefits of Pittsburgh's urban forest between $10 and $13 million.
Between 2006 and 2011, the Pittsburgh metropolitan statistical area (MSA) experienced over 10% appreciation in housing prices.
In 2011, Pittsburgh became "Gotham City" during the filming of The Dark Knight Rises.
In 2011, The Economist's Global Liveability Ranking placed Pittsburgh as the most or second-most livable city in the United States.
In 2011, Wiz Khalifa's hit song "Black and Yellow" reached number one on the Billboard Hot 100.
In 2011, the Port of Pittsburgh ranked as the 20th-largest port in the United States.
Since 2011, the Pittsburgh Dad series has showcased the Pittsburghese dialect to a global YouTube audience.
Between the 2012 and 2013 seasons, the University of Pittsburgh Panthers left the Big East for the ACC.
From 2012 to 2014, suburban courses such as Laurel Valley Golf Club and the Fox Chapel Golf Club, hosted Senior Players Championships.
In 2012, The Economist's Global Liveability Ranking placed Pittsburgh as the most or second-most livable city in the United States.
In 2012, The Lancet published a UPMC study on quadriplegics being able to move a robotic arm by thought.
In 2012, per 100,000 persons stats were collected in Pittsburgh.
In 2012, the Pittsburgh Pirates ended their MLB record of 20 consecutive losing seasons.
In 2012, the UPMC Children's Hospital campus was featured in world news, and the Pittsburgh Penguins announced a training facility with UPMC.
Since 2012, the Hot Mass after-hours electronic music dance party has been a key part of Pittsburgh's electronic music scene.
Between the 2012 and 2013 seasons, the University of Pittsburgh Panthers left the Big East for the ACC.
In 2013, Pittsburgh was named the 3rd "most secure" big city by Farmers Insurance.
In 2013, Sperling's Best Places listed Pittsburgh among the "top 15 cities for baseball".
In 2013, UPMC announced its partnership with Nazarbayev University to help found its medical school.
In 2013, the Pittsburgh Pirates appeared in the National League Division Series.
On January 6, 2014, Bill Peduto was sworn in as mayor of Pittsburgh.
A 2014 to 2016 study found that children near pollution sources like industrial sites had asthma rates nearly three times the national average.
In 2014, The Economist's Global Liveability Ranking placed Pittsburgh as the most or second-most livable city in the United States.
In 2014, a National Bureau of Economic Research report named Pittsburgh the second-best U.S. city for intergenerational economic mobility.
In 2014, a Pew Research Center study indicated that 78% of the city's population identified as Christian, with 42% Protestant and 32% Catholic, while 18% claimed no religious affiliation.
In 2014, poet Terrance Hayes, winner of the 2010 National Book Award, received a MacArthur Foundation Fellowship.
In 2015, Chatham University, originally a woman's college, became fully coeducational.
In 2015, Metropolis magazine listed Pittsburgh among the "eleven most livable cities in the world".
A 2014 to 2016 study found that children near pollution sources like industrial sites had asthma rates nearly three times the national average.
In 2016, Pittsburgh faced high lead levels in the city's drinking water.
In 2016, the Pittsburgh Penguins won an Eastern Conference title and a Stanley Cup championship.
From 2017 to 2023, Pittsburgh hosted major film and television productions like Fences and Mindhunter, significantly boosting the local economy.
In 2017, ALCOSAN proposed a $2 billion system upgrade.
In 2017, a study by the Cohen Center for Modern Jewish Studies at Brandeis University estimated the Jewish population of Greater Pittsburgh to be 49,200.
In 2017, the Pittsburgh Penguins won an Eastern Conference title and a Stanley Cup championship.
As of 2018, much of Pittsburgh's population density was concentrated in the central, southern, and eastern areas.
In 2018, Pittsburgh experienced its highest annual precipitation at 57.83 in (1,469 mm).
In 2018, The Economist's Global Liveability Ranking placed Pittsburgh as the most or second-most livable city in the United States.
In 2018, the University of Pittsburgh Panthers appeared in the ACC Championship Game.
In 2018, the starting teacher salary in Pittsburgh with a BA was $46,920, and the maximum salary with a master's was $95,254.
At the end of 2019, the Pittsburgh Bureau of Police reported 37 murders in the city that year.
By the 2019 American Community Survey, the median income for a household increased to $53,799.
In 2019, Pittsburgh was named "Food City of the Year" by af&co, a San Francisco-based restaurant and hospitality consulting firm.
In 2019, the EPA approved ALCOSAN's proposed $2 billion system upgrade.
By the 2020 census, the population slightly declined further to 302,971.
The American Lung Association's 2024 report covered data beginning in 2020.
In November 2021, Ed Gainey was elected as Pittsburgh's first African-American mayor.
In 2021, the University of Pittsburgh Panthers won the ACC Championship Game.
United States Environmental Protection Agency (EPA) data from 2021 to 2024 shows that Pittsburgh's air quality was generally good or moderate.
The American Lung Association's 2024 report covered data until 2022.
From 2017 to 2023, Pittsburgh hosted major film and television productions like Sweet Girl and I'm Your Woman, significantly boosting the local economy.
In 2023, the Pittsburgh City Council approved an increase to the police budget by $6 million, with a portion allocated to the Stop the Violence trust fund.
Since 2023, Summer Lee has represented Pittsburgh in the 12th congressional district.
In 2024, Anthrocon in Pittsburgh attracted over 17,000 visitors.
In 2024, the American Lung Association's "State of the Air" report indicated that Pittsburgh's air quality is poor but improving.