When you speak about York, PA you could be referring to both York County and the city of York. Cork County is in the Susquehanna Valley, bordered on the east by the Susquehanna River. York City is 20 miles southwest of Three Mile Island, 30 miles southwest of Hershey (home of Hershey's Chocolates, Hershey Park and Chocolate World. As traditional fairs go, the first began in York, PA. The York Fair was America's first fair, held in 1765, 11 years before the nation was founded.