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About Pennsylvania

Pennsylvania ( (listen); (Pennsylvania Dutch: Pennsilfaani)), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to the southeast, Maryland to the south, West Virginia to the southwest, Ohio to the west, Lake Erie and the Canadian province of Ontario to the northwest, New York to the north, and the Delaware River and New Jersey to the east. Pennsylvania is the fifth-most populous state in the nation with over 13 million residents as of 2020. It is the 33rd-largest state by area and ranks ninth among all states in population density. Nearly 7 million residents are concentrated in the southeastern Delaware Valley metropolitan area, centered around Philadelphia, the state's largest and nation's sixth most populous city.