Located in the southeastern corner of Pennsylvania, Philadelphia is the birthplace of both Pennsylvania and the United States. The region was home primarily to Lenape Native Americans until the Swedes established the first settlement in the state, Fort Nya Gothenburg, on present-day Tinicum Island in Delaware County in 1643.
William Penn established Philadelphia in 1682. At the same time, he established the state’s first three counties: Philadelphia County, Bucks County, and Chester County. Those three counties, along with Delaware County and Montgomery County comprise the area now known as Philadelphia and its Suburbs.