Scranton is the sixth-largest city in the Commonwealth of Pennsylvania behind Philadelphia, Pittsburgh, Allentown, Erie and Reading. It is the county seat of Lackawanna County in the state's northeastern region and is also the central point for the federal court of the area. With a population of 76,089, it is the largest city in the Scranton–Wilkes-Barre–Hazleton, PA Metropolitan Statistical Area, with a greater population of about 570,000, also known as the Wyoming Valley.