West Philadelphia

West Philadelphia, nicknamed West Philly, is a section of Philadelphia, Pennsylvania. Though there is no official definition of its boundaries, it is generally considered to reach from the western shore of the Schuylkill River, to City Avenue to the northwest, Cobbs Creek to the southwest, and the SEPTA 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. The eastern side of West Philadelphia is also known as University City.

Most of the houses in West Philadelphia are row houses, although there are areas of semi-detached and detached houses. The earliest developments began in 1850 and the final period of mass construction ended in 1930. Development was enabled by the creation of the horsecar, which pushed development to about 43rd Street, and, after the arrival of the electrified streetcar in 1892, accelerated to the west and southwest. (See West Philadelphia Streetcar Suburb Historic District and the Market Street Line.)

source: wikipedia.org