county seat in Allegheny County, Pennsylvania, United States

Pittsburgh is a city in the American state of Pennsylvania. The city was known in the 20th century for its steel industry. However, with the collapse of United States steel industry in the 1980s, the economy of Pittsburgh is now mostly based on healthcare, education, technology, and financial services. It is also the home of the Pittsburgh Steelers football team, who have won the Super Bowl six times, the Pittsburgh Pirates, the Pittsburgh Penguins hockey team, the University of Pittsburgh and Carnegie Mellon University. Pittsburgh is the county seat for Allegheny County. The Allegheny and Monongahela rivers meet in Pittsburgh and form the Ohio River.

City of Pittsburgh
Flag of City of Pittsburgh
Official seal of City of Pittsburgh
City of Bridges, Steel City, City of Champions, The 'Burgh, Iron City, Steel Town, The College City, Roboburgh
Benigno Numine ("With the Benevolent Deity")
Location in Allegheny County, Pennsylvania
Coordinates: Coordinates: 40°26′30″N 80°00′00″W / 40.44167°N 80.00000°W / 40.44167; -80.00000
Country United States
Commonwealth Pennsylvania
FoundedNovember 25, 1758
IncorporatedApril 22, 1794 (borough)
 March 18, 1816 (city)
 • MayorEd Gainey
 • City151.1 km2 (58.3 sq mi)
 • Land143.9 km2 (55.5 sq mi)
 • Water7.2 km2 (2.8 sq mi)
 • Metro
13,839 km2 (5,343 sq mi)
372.77 m (1,223 ft)
 (U.S. Census Estimate, 2006)
 • City312,819
 • Density2,174/km2 (5,636/sq mi)
 • Metro
Time zoneUTC-5 (EST)
 • Summer (DST)UTC-4 (EDT)
Area code(s)412, 724, 878

Pittsburgh is in western Pennsylvania. It has a population of 312,819 people and a metro population of almost 2,400,040 people. Pittsburgh was the most livable city in the United States in 2007. In 2014 Pittsburgh was ranked sixth in the country for polluted cities by the American Lung Association.

The French and Indian War started when George Washington went to Pittsburgh. Later it was a center of the Whiskey Rebellion.

The city is served by the Pittsburgh International Airport.


  1. "Population Estimates for Places Over 100,000: 2000 to 2006". U.S. Census Bureau, Population Division. 2007-06-27. Retrieved 2007-08-14. {{cite web}}: Check date values in: |date= (help)
  2. "Annual Estimates of the Population of Metropolitan and Micropolitan Statistical Areas". U.S. Census Bureau, Population Division. 2007-04-04. Retrieved 2007-08-14. {{cite web}}: Check date values in: |date= (help)

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