Pittsburgh, Pennsylvania
City of Pittsburgh
Clockwise from top: Pittsburgh skyline; Carnegie Mellon University; PNC Park; Duquesne Incline; Cathedral of Learning at the University of Pittsburgh
Location within Allegheny County Interactive map outlining Pittsburgh
Location within Allegheny County
Interactive map outlining Pittsburgh
Pittsburgh is located in Pennsylvania
Location within Pennsylvania
Pittsburgh is located in the United States
Location within the United States
Coordinates: 40°26′23″N 79°58′35″W / 40°26′23″N 79°58′35″W / 40.43972; -79.97639 Allegheny
Historic empires
Historic colonies
FoundedNovember 27, 1758
Municipal incorporation
  • April 22, 1794 (Borough)
  • March 18, 1816 (City)
Founded by
Named for"The Great Commoner": Prime Minister William Pitt
 • TypeMayor-Council
 • MayorBill Peduto (D)
 • City Council
 • State House
 • State Senate
 • U.S. HouseMike Doyle (D)
 • City58.34 sq mi (151.11 km2)
 • Land55.38 sq mi (143.42 km2)
 • Water2.97 sq mi (7.69 km2)  4.8%
 • Metro
5,343 sq mi (13,840 km2)
Highest elevation
1,370 ft (420 m)
Lowest elevation
710 ft (220 m)
 • City305,704
 • Estimate 
 • RankUS: 66th
 • Density5,460.98/sq mi (2,108.49/km2)
 • Urban
1,775,634 (US: 25th)
 • Metro
2,362,453 (US: 22nd)
 • CSA
2,659,937 (US: 20th)
 • GMP
$131.3 billion (23rd)
Demonym(s)Pittsburgher, Yinzer
Time zoneUTC−5 (Eastern Standard Time)
 • Summer (DST)UTC−4 (Eastern Daylight Time)
ZIP Code
Area codes412, 724, 878
FIPS code42-61000
GNIS feature ID1213644
ExpresswaysI-279.svg I-376.svg I-579.svg PA-28.svg PA-65.svg
TransitPort Authority Transit
RailPenn Station
Capitol Limited, PittsburghPA.gov

Pittsburgh (ɡ/ PITS-burg) is a city in the state of Pennsylvania in the United States, and is the county seat of Allegheny County. A population of about 301,048 residents live within the city limits, making it the 66th-largest city in the U.S. The metropolitan population of 2,324,743 is the largest in both the Ohio Valley and Appalachia, the second-largest in Pennsylvania (behind Philadelphia), and the 27th-largest in the U.S.

Pittsburgh is located in the southwest of the state, at the confluence of the Allegheny, Monongahela, and Ohio rivers.[4] Pittsburgh is known both as "the Steel City" for its more than 300 steel-related businesses and as the "City of Bridges" for its 446 bridges.[5] The city features 30 skyscrapers, two inclined railways, a pre-revolutionary fortification and the Point State Park at the confluence of the rivers. The city developed as a vital link of the Atlantic coast and Midwest, as the mineral-rich Allegheny Mountains made the area coveted by the French and British empires, Virginians, Whiskey Rebels, and Civil War raiders.[6]

Aside from steel, Pittsburgh has led in manufacturing of aluminum, glass, shipbuilding, petroleum, foods, sports, transportation, computing, autos, and electronics.[7] 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.[8] America's 1980s deindustrialization laid off area blue-collar workers and thousands of downtown white-collar workers when the longtime Pittsburgh-based world headquarters moved out.[9] This heritage left the area with renowned museums, medical centers,[10] parks, research centers, and a diverse cultural district.[11]

Today, Google, Apple Inc., Bosch, Facebook, Uber, Nokia, Autodesk, Microsoft and IBM are among 1,600 technology firms generating $20.7 billion in annual Pittsburgh payrolls. The area has served as the long-time federal agency headquarters for cyber defense, software engineering, robotics, energy research and the nuclear navy.[12] The area is home to 68 colleges and universities, including research and development leaders Carnegie Mellon University and the University of Pittsburgh.[13] The nation's eighth-largest bank, eight Fortune 500 companies, and six of the top 300 U.S. law firms make their global headquarters in the area, while RAND, BNY Mellon, Nova, FedEx, Bayer and NIOSH have regional bases that helped Pittsburgh become the sixth-best area for U.S. job growth.[14]

In 2015, Pittsburgh was listed among the "eleven most livable cities in the world";[15][16] The Economist's Global Liveability Ranking placed Pittsburgh as the most or second-most livable city in the United States in 2005, 2009, 2011, 2012 and 2014.[17] The region is a hub for Leadership in Energy and Environmental Design and energy extraction.[18]


Fort Pitt Blockhouse, built by the British in 1764, oldest extant structure in Pittsburgh.
Historical claims
French Empire 1669–1758
British Empire 1681–1781
United States 1776–present

Pittsburgh was named in 1758 by General John Forbes, in honor of British statesman William Pitt, 1st Earl of Chatham. As Forbes was a Scot, he probably pronounced the name ə/ PITS-bər-ə (similar to Edinburgh).[19][20] Pittsburgh was incorporated as a borough on April 22, 1794, with the following Act:[21] "Be it enacted by the Pennsylvania State Senate and Pennsylvania House of Representatives of the Commonwealth of Pennsylvania ... by the authority of the same, that the said town of Pittsburgh shall be ... erected into a borough, which shall be called the borough of Pittsburgh for ever."[22] From 1891 to 1911, the city's name was federally recognized as "Pittsburg", though use of the final h was retained during this period by the city government and other local organizations.[23][19] After a public campaign, the federal decision to drop the h was reversed.[19]

The area of the Ohio headwaters was long inhabited by the Shawnee and several other settled groups of Native Americans.[24] The first known European to enter the region was the French explorer/trader Robert de La Salle from Quebec during his 1669 expedition down the Ohio River.[25] European pioneers, primarily Dutch, followed in the early 18th century. Michael Bezallion was the first to describe the forks of the Ohio in a 1717 manuscript, and later that year European fur traders established area posts and settlements.[26]

In 1749, French soldiers from Quebec launched an expedition to the forks to unite Canada with French Louisiana via the rivers.[26] During 1753–54, the British hastily built Fort Prince George before a larger French force drove them off. The French built Fort Duquesne based on LaSalle's 1669 claims. The French and Indian War, the North American front of the Seven Years' War, began with the future Pittsburgh as its center. British General Edward Braddock was dispatched with Major George Washington as his aide to take Fort Duquesne.[27] The British and colonial force were defeated at Braddock's Field. General John Forbes finally took the forks in 1758. He began construction on Fort Pitt, named after William Pitt the Elder while the settlement was named "Pittsborough".[28]

During Pontiac's Rebellion, native tribes conducted a siege of Fort Pitt for two months until Colonel Henry Bouquet relieved it after the Battle of Bushy Run. Fort Pitt is notable as the site of an early use of smallpox for biological warfare. Lord Jeffery Amherst ordered blankets contaminated from smallpox victims to be distributed in 1763 to the tribes surrounding the fort. The disease spread into other areas, infected other tribes, and killed hundreds of thousands.[29]

During this period, the powerful nations of the Iroquois Confederacy, based in New York, had maintained control of much of the Ohio Valley as hunting grounds by right of conquest after defeating other tribes. By the terms of the 1768 Treaty of Fort Stanwix, the Penns were allowed to purchase the modern region from the Iroquois. A 1769 survey referenced the future city as the "Manor of Pittsburgh".[30] Both the Colony of Virginia and the Province of Pennsylvania claimed the region under their colonial charters until 1780, when they agreed under a federal initiative to extend the Mason–Dixon line westward, placing Pittsburgh in Pennsylvania. On March 8, 1771, Bedford County, Pennsylvania was created to govern the frontier. On April 16, 1771, the city's first civilian local government was created as Pitt Township.[31][32] William Teagarden was the first constable, and William Troop was the first clerk.[33]

Following the American Revolution, the village of Pittsburgh continued to grow. One of its earliest industries was boat building for settlers of the Ohio Country. In 1784, Thomas Viceroy completed a town plan which was approved by the Penn family attorney. Pittsburgh became a possession of Pennsylvania in 1785. The following year, the Pittsburgh Post-Gazette was started, and in 1787, the Pittsburgh Academy was chartered. Unrest during the Whiskey Rebellion of 1794 resulted in federal troops being sent to the area. By 1797, glass manufacture began, while the population grew to around 1,400. Settlers came via routes over the Appalachian Mountains or through the Great Lakes. Fort Pitt (now Pittsburgh) at the source of the Ohio River became the main base for settlers moving into the Northwest Territory.

1800 to 1900

A historic 1857 scene of the Monongahela River in downtown Pittsburgh featuring a steamboat
Monongahela River scene, 1857
A wrought iron life-size facade of legendary steelworker Joe Magarac in downtown Pittsburgh
Downtown facade memorializing Pittsburgh's industrial heritage with an image of legendary steelworker Joe Magarac

The War of 1812 cut off the supply of British goods, stimulating American industry. By 1815, Pittsburgh was producing significant quantities of iron, brass, tin, and glass. On March 18, 1816, the 46-year-old local government became a city. It was served by numerous river steamboats, that increased trading traffic on the rivers.

In the 1830s, many Welsh people from the Merthyr steelworks immigrated to the city following the aftermath of the Merthyr Rising. By the 1840s, Pittsburgh was one of the largest cities west of the Allegheny Mountains. The Great Fire of Pittsburgh destroyed over a thousand buildings in 1845. The city rebuilt with the aid of Irish immigrants who came to escape the Great Famine. By 1857, Pittsburgh's 1,000 factories were consuming 22 million coal bushels yearly. Coal mining and iron manufacturing attracted waves of European immigrants to the area, the most came from Germany.

Pittsburgh in 1874, by Otto Krebs

While Pennsylvania had been established as a free state after the Revolution, enslaved African Americans sought freedom here through escape as refugees from the South, or occasionally fleeing from travelers they were serving who stayed in the city. There were active stations of the Underground Railroad in the city, and numerous refugees were documented as getting help from station agents and African-American workers in city hotels. The Drennen Slave Girl walked out of the Monongahela House in 1850, apparently to freedom.[34] The Merchant's Hotel was also a place where African-American workers would advise slaves the state was free and aid them in getting to nearby stations of the Underground Railroad.[35] Sometimes refugee slaves from the South stayed in Pittsburgh, but other times they continued North, including into Canada. Many slaves left the city and county for Canada after Congress passed the 1850 Fugitive Slave Act, as it required cooperation from law enforcement even in free states and increased penalties. From 1850 to 1860, the black population in Allegheny County dropped from 3,431 to 2,725 as people headed to more safety in Canada.[34]

Burning of Union Depot, Pittsburgh, during the Pittsburgh railroad strike of 1877

The American Civil War boosted the city's economy with increased iron and armament demand by the Union. Andrew Carnegie began steel production in 1875 at the Edgar Thomson Steel Works in North Braddock, Pennsylvania, which evolved into the Carnegie Steel Company. He adopted the Bessemer process to increase production. Manufacturing was key to growth of Pittsburgh and the surrounding region. Railroad lines were built into the city along both rivers, increasing transportation access to important markets.

1900 to present

Pittsburgh in 1903

In 1901, J. P. Morgan and attorney Elbert H. Gary merged Carnegie Steel Company and several other companies into U.S. Steel. By 1910, Pittsburgh was the nation's 8th-largest city, accounting for between one-third and one-half of national steel output.

The Pittsburgh Agreement was subscribed in May 1918 between the Czech and Slovak nationalities, as envisioned by T. G. Masaryk, concerning the future foundation of Czechoslovakia.[36]

The city's population swelled to more than a half million, attracting numerous European immigrants to its industrial jobs. By 1940, non-Hispanic whites were 90.6% of the city's population.[37] Pittsburgh also became a main destination of the African-American Great Migration from the rural South during the first half of the 20th century.[38] Limited initially by discrimination, some 95% percent of the men became unskilled steel workers.[39]

During World War II, demand for steel increased and area mills operated 24 hours a day to produce 95 million tons of steel for the war effort.[28] This resulted in the highest levels of air pollution in the city's almost century of industry. The city's reputation as the "arsenal of democracy"[40][41] was being overshadowed by James Parton's 1868 observation of Pittsburgh being "hell with the lid off."[42]

Following the war, the city launched a clean air and civic revitalization project known as the "Renaissance," cleaning up the air and the rivers. The "Renaissance II" project followed in 1977, focused on cultural and neighborhood development. The industrial base continued to expand through the 1970s, but beginning in the early 1980s both the area's steel and electronics industries imploded during national industrial restructuring. There were massive layoffs from mill and plant closures.[9]

In the later 20th century, the area shifted its economic base to education, tourism, and services, largely based on healthcare/medicine, finance, and high technology such as robotics. Although Pittsburgh successfully shifted its economy and remained viable, the city's population has never rebounded to its industrial-era highs. While 680,000 people lived in the city proper in 1950, a combination of suburbanization and economic turbulence resulted in a decrease in city population, even as the metropolitan area population increased again.

During the late 2000s recession, Pittsburgh was economically strong, adding jobs when most cities were losing them. It was one of the few cities in the United States to see housing property values rise. Between 2006 and 2011, the Pittsburgh metropolitan statistical area (MSA) experienced over 10% appreciation in housing prices—the highest appreciation of the largest 25 MSAs in the United States, as 22 of the top 25 MSAs saw a depreciation of housing values.[43] Pittsburgh's story of economic regeneration was the inspiration of President Barack Obama to host the 2009 G-20 Pittsburgh summit.[44]

Other Languages
Afrikaans: Pittsburgh
አማርኛ: ፕትስበርግ
asturianu: Pittsburgh
azərbaycanca: Pittsburq
تۆرکجه: پیتسبورگ
bamanankan: Pittsburgh
Bân-lâm-gú: Pittsburgh
беларуская: Пітсбург
беларуская (тарашкевіца)‎: Пітсбург (Пэнсыльванія)
български: Питсбърг
bosanski: Pittsburgh
brezhoneg: Pittsburgh
català: Pittsburgh
Cebuano: Pittsburgh
čeština: Pittsburgh
Chamoru: Pittsburgh
corsu: Pittsburgh
Cymraeg: Pittsburgh
dansk: Pittsburgh
Deutsch: Pittsburgh
Diné bizaad: Naʼníʼá Halání
eesti: Pittsburgh
Ελληνικά: Πίτσμπουργκ
emiliàn e rumagnòl: Pittsburgh
español: Pittsburgh
Esperanto: Pittsburgh
euskara: Pittsburgh
فارسی: پیتسبرگ
français: Pittsburgh
Frysk: Pittsburgh
Gaeilge: Pittsburgh
Gàidhlig: Pittsburgh
Gĩkũyũ: Pittsburgh
한국어: 피츠버그
հայերեն: Փիթսբուրգ
Bahasa Indonesia: Pittsburgh
íslenska: Pittsburgh
italiano: Pittsburgh
עברית: פיטסבורג
қазақша: Питтсбург
Kreyòl ayisyen: Pittsburgh, Pennsilvani
Кыргызча: Питсбург
Latina: Pittsburgum
latviešu: Pitsburga
lietuvių: Pitsbergas
Limburgs: Pittsburgh
lumbaart: Pittsburgh
magyar: Pittsburgh
македонски: Питсбург
Malagasy: Pittsburgh
Bahasa Melayu: Pittsburgh
Nederlands: Pittsburgh
нохчийн: Питтсбург
norsk: Pittsburgh
norsk nynorsk: Pittsburgh
occitan: Pittsburgh
ਪੰਜਾਬੀ: ਪਿਟਸਬਰਗ
پنجابی: پٹس برگ
Piemontèis: Pittsburgh
polski: Pittsburgh
português: Pittsburgh
русиньскый: Питтсбург
русский: Питтсбург
саха тыла: Питтсбург
sardu: Pittsburgh
Scots: Pittsburgh
sicilianu: Pittsburgh
Simple English: Pittsburgh
slovenčina: Pittsburgh
slovenščina: Pittsburgh
ślůnski: Pittsburgh
српски / srpski: Питсбург
srpskohrvatski / српскохрватски: Pittsburgh, Pennsylvania
suomi: Pittsburgh
svenska: Pittsburgh
Tagalog: Pittsburgh
татарча/tatarça: Питтсбург
Türkçe: Pittsburgh
українська: Піттсбург
اردو: پٹسبرگ
Tiếng Việt: Pittsburgh
Volapük: Pittsburgh
Winaray: Pittsburgh
吴语: 匹兹堡
ייִדיש: פיטסבורג
粵語: 匹茲堡
中文: 匹兹堡