Introduction
Second-most populous city in Pennsylvania, U.S. This article is about the city in Pennsylvania. For the region, see Greater Pittsburgh. For other uses, see Pittsburgh (disambiguation). Not to be confused with Pittsburg. City in Pennsylvania, United StatesPittsburghCityDowntown PittsburghDuquesne InclinePNC ParkRoberto Clemente BridgeCathedral of LearningPhipps Conservatory and Botanical GardensCarnegie Museums of Pittsburgh FlagSealCoat of armsNicknames: City of Bridges, Steel City,City of Champions, The 'Burgh, The Paris of AppalachiaMotto: Benigno Numine ("With the benevolent deity")Interactive map of PittsburghPittsburghShow map of PennsylvaniaPittsburghShow map of the United StatesCoordinates: 40°26′23″N 79°58′35″W / 40.43972°N 79.97639°W / 40.43972; -79.97639Country United StatesState PennsylvaniaCountyAlleghenyFoundedNovember 27, 1758; 267 years ago (1758-11-27) (fort)Municipal incorporation April 22, 1794; 232 years ago (1794-04-22) (borough) March 18, 1816; 210 years ago (1816-03-18) (city) Founded byJohn ForbesNamed afterWilliam Pitt, 1st Earl of ChathamGovernment • TypeMayor-council • MayorCorey O'Connor (D) • City Council List Bobby WilsonKim SalinetroRobert Charland IIIAnthony CoghillBarbara Greenwood WarwickDaniel Lavelle (President)Deborah GrossErika StrassburgerKhari Mosley Area • City58.35 sq mi (151.12 km2) • Land55.37 sq mi (143.42 km2) • Water2.97 sq mi (7.70 km2)Highest elevation1,370 ft (420 m)Lowest elevation710 ft (220 m)Population (2020) • City302,971 • Estimate (2024) 307,668 • Rank67th in the United States2nd in Pennsylvania • Density5,471.3/sq mi (2,112.5/km2) • Urban1,745,039 (US: 30th) • Urban density1,925/sq mi (743.1/km2) • Metro2,429,917 (US: 28th)Demonym(s)Pittsburgher, YinzerGDP • Pittsburgh (MSA)$159.6 billion (2023)Time zoneUTC−5 (Eastern Standard Time) • Summer (DST)UTC−4 (Eastern Daylight Time)ZIP Code 78 ZIP Codes: 15106, 15120-15122, 15201-15244, 15250-15255, 15257-15262, 15264-15265, 15267-15268, 15270, 15272, 15274-15279, 15281-15283, 15286, 15289-15290, 15295 Area codes412, 724, 878FIPS code42-61000GNIS feature ID1213644Websitepittsburghpa.gov Pennsylvania Historical MarkerDesignated1946 Pittsburgh (/ˈpɪtsbɜːrɡ/ PITS-burg) is a city in Allegheny County, Pennsylvania, United States, and its county seat. Located in southwestern Pennsylvania where the Allegheny and Monongahela Rivers meet to form the Ohio River, it had a population of 302,971 at the 2020 census, making it the second-most populous city in Pennsylvania after Philadelphia. The Pittsburgh metropolitan area has over 2.43 million people, making it the largest in the Ohio Valley and Appalachia, the second-largest in Pennsylvania, and the 28th-largest in the U.S. The greater Pittsburgh–Weirton–Steubenville combined statistical area includes parts of Ohio and West Virginia. Pittsburgh is known as "the Steel City" for its dominant role in the history of the U.S. steel industry. It developed as a vital link of the Atlantic coast and Midwest, as the mineral-rich Allegheny Mountains led to the region being contested by the French and British empires, Virginians, Whiskey Rebels, and Civil War raiders. For part of the 20th century, Pittsburgh was behind only New York City and Chicago in corporate headquarters employment; it had the most U.S. stockholders per capita. Deindustrialization in the late 20th century resulted in massive layoffs among blue-collar workers as steel and other heavy industries declined, coinciding with several Pittsburgh-based corporations moving out of the city. However, the city divested from steel and, since the 1990s, Pittsburgh has focused its energies on the healthcare, education, and technology industries. Pittsburgh is home to large medical providers, including the University of Pittsburgh Medical Center and Allegheny Health Network, as well as 68 colleges and universities, including Carnegie Mellon University, Duquesne University and the University of Pittsburgh. The area has served as the federal agency headquarters for cyber defense, software engineering, robotics, energy research, and the nuclear navy. The city is home to ten Fortune 500 companies and seven of the largest 300 U.S. law firms. Pittsburgh is sometimes called the "City of Bridges" for its 446 bridges. Its rich industrial history left the area with renowned cultural institutions, including the Carnegie Museums of Pittsburgh, Pittsburgh Zoo & Aquarium, Phipps Conservatory and Botanical Gardens, the National Aviary, and a diverse cultural district. The city's major league professional sports teams include the Pittsburgh Steelers, Pittsburgh Penguins, and Pittsburgh Pirates. Jehovah's Witnesses traces its earliest origins to the city. In 2009, it hosted the G20 summit.