Greater Philadelphia Area
The Delaware Valley as discussed here is composed of several counties in Eastern Pennsylvania and Western New Jersey, one county in northern Delaware and one county in northeastern Maryland. The area has a population of over 7.1 million (as of the 2010 Census Bureau count). Philadelphia, being the region’s major commercial, cultural, and industrial center, maintains a rather large sphere of influence that affects the counties that immediately surround it. The majority of the region’s populace resides in Pennsylvania, New Jersey, and Delaware.