Pennsylvania, [b] officially the Commonwealth of Pennsylvania, [c] is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States.It borders Delaware to its southeast, Maryland to its south, West Virginia to its southwest, Ohio and the Ohio River to its west, Lake Erie and New York to its north, the Delaware River and New Jersey to its east, and ...

Pennsylvania, [b] officially the Commonwealth of Pennsylvania, [c] is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States.It borders Delaware to its southeast, Maryland to its south, West Virginia to its southwest, Ohio and the Ohio River to its west, Lake Erie and New York to its north, the Delaware River and New Jersey to its east, and ...