About Pittsburgh

Pittsburgh ( PITS-burg) is a city in the Commonwealth of Pennsylvania in the United States and the county seat of Allegheny County. It is the second-most populous city in Pennsylvania, behind Philadelphia, and 68th-largest city in the U.S. The Pittsburgh metropolitan area is the anchor of Western Pennsylvania; its population of 2.37 million is the largest in both the Ohio Valley and Appalachia, the second-largest in Pennsylvania, and the 27th-largest in the U.S. The city's population, as of the 2020 census, was 302,971. Pittsburgh is located in southwest Pennsylvania at the confluence of the Allegheny River and the Monongahela River, which combine to form the Ohio River. 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. The city features 30 skyscrapers, two inclined railways, a pre-revolutionary fortification and the Point State Park at the confluence of the rivers.