All My Children's setting is in a fictitious suburb based on a community in Pennsylvania.
All My Children . Created by Agnes Nixon , All My Children is set in Pine Valley , Pennsylvania , a fictional suburb of Philadelphia , which is modeled on the actual Philadelphia suburb of Rosemont . Rosemont is a community in Pennsylvania on the Philadelphia Main Line between Bryn Mawr , Pennsylvania , and Villanova , Pennsylvania , lying partly in Radnor Township , Pennsylvania , and partly in Lower Merion Township , Pennsylvania .