The following is a list of neighborhoods, districts and other places located in the city of Philadelphia, Pennsylvania. The list is organized by broad geographical sections within the city. Common usage for Philadelphia's neighborhood names does not respect "official" borders used by the city's police, planning commission or other entities. Therefore, some of the places listed here may overlap geographically, and residents do not always agree where one neighborhood ends and another begins. Philadelphia has 41 ZIP-codes, which are often used for neighborhood analysis. Historically, many neighborhoods were defined by incorporated townships (Blockley, Roxborough), districts (Belmont, Kensington, Moyamensing, Richmond) or boroughs (Bridesburg, Frankford, Germantown, Manayunk) before being incorporated into the city with the Act of Consolidation of 1854. Adding further complication is the fact that in some parts of Philadelphia, especially the central areas of North, West and South Philadelphia, residents have long been more likely to identify with the name of their section of the city than with any specific neighborhood name. Today, community development corporations, neighborhood watches and other civic organizations are influential in shaping the use of neighborhood names and approximate boundaries. For planning purposes, the city is divided into 18 Planning Analysis Sections, which are Upper Far Northeast, Lower Far Northeast, Lower Northwest, Lower Southwest, University Southwest, West, West Park, Lower Northeast, River Wards, Lower North, North, Central, South, Lower South, Upper Northwest, Upper North, Central Northeast and North Delaware. Center City The Center City Planning Analysis Section extends from South Street on the south to Vine Street on the north and from the Delaware River on the east to the Schuylkill River on the west. South Philadelphia The South Philadelphia Planning Analysis Section is bounded by South Street on the north and the Delaware and Schuylkill Rivers to their confluence. Southwest Philadelphia Southwest Philadelphia (formerly Kingsessing Township) is a section of Philadelphia, Pennsylvania that can be described as extending from the western side of the Schuylkill River to the city line, with the northern border defined by the Philadelphia City Planning Commission as east from the city line along Baltimore Avenue moving south along 51st Street to Springfield Ave. It follows the train tracks until 49th Street. From 49th and Kingsessing Ave the line moves east along Kingsessing Ave. The line then moves south along 46th St to Paschall Ave where it jogs to join Grays Ferry where the line runs to the Schuylkill River.