Very impressive. Outside of NYC(global capital) DC(nations capital) and Bay Area(silicon valley/best geographic location in the states/views) the Philadephia suburbs arguably are the wealthiest in the country. Not bad for an obscure inland locale.
Im going to take a page out of Moorestownresidents book and say if Delaware County didnt have Chester/Upper Darby it would be in the top 20 nationally in this category.
Speaking of Moorestown

Lets get on the ball over on the east side of the river. Help the area represent.