High Quality Content by WIKIPEDIA articles! West Philadelphia is a section of the City of Philadelphia, Pennsylvania, United States. Though there is no official definition of its boundaries, West Philly is generally considered to reach from the western shore of the Schuylkill River, to City Line Avenue to the northwest, Cobbs Creek to the southwest, and the SEPTA R3 Media-Elwyn line to the south.An alternate definition includes all city land west of the Schuylkill; this would also include Southwest Philadelphia and its neighborhoods.