Pittsburgh is the second-largest city in the Commonwealth of Pennsylvania with a population of 305,842 and the county seat of Allegheny County. Pittsburgh is known as both “the Steel City” for its more than 300 steel-related businesses, as well as “the City of Bridges” for its 446 bridges. In 2015, Pittsburgh was named on a list of the “eleven most livable cities in the world.” Google, Apple, Bosch, Disney, Uber, Intel and IBM are among 1,600 technology firms generating $20.7 billion in annual Pittsburgh payrolls, with the area serving as the long-time federal agency headquarters for cyber defense, software engineering, robotics, energy research and the nuclear navy. The area is home to 68 colleges and universities including research and development leaders Carnegie Mellon University and the University of Pittsburgh.
