Wallingford is an unincorporated community in Nether Providence Township, Delaware County, Pennsylvania, United States. Founded in 1687, it is named for Wallingford, England. In 2007, Wallingford was named by Money Magazine as the ninth best place to live in the United States; two other towns in the area made the top 15. Most locations in Nether Providence use Wallingford's ZIP code. It is west of Interstate 476, known locally as the Blue Route, and east of S. Providence Road, PA 252.