Wallingford is an unincorporated community in Nether Providence Township, Delaware County in Pennsylvania, USA. Founded in 1687, it is named for Wallingford, England. In 2007, Wallingford was named by Money Magazine as the 9th best place to live in the United States; two other towns in the area made the top 15. It is west of Interstate 476 (known locally as the "Blue Route") and east of S. Providence Road, PA 252. Crum Creek forms the township's eastern border with Swarthmore Borough.