The Bronx

===Regional divisions===
[[File:Aerial_view_of_the_Bronx,_Harlem_River,_Harlem,_Hudson_River,_George_Washington_Bridge,_2008-05-10.jpg|thumb|An aerial view of the Bronx, [[Harlem River]], [[Harlem]], [[Hudson River]] and [[George Washington Bridge]]]]
There are two primary systems for dividing the Bronx into regions, which do not necessarily agree with one another. One system is based on the [[Bronx River]], while the other strictly separates [[South Bronx]] from the rest of the borough.

The [[Bronx River]] divides the borough nearly in half, putting the earlier-settled, more urban, and hillier sections in the western lobe and the newer, more suburban coastal sections in the eastern lobe. It is an accurate reflection on the Bronx's history considering that the towns that existed in the area prior to annexation to the City of New York generally did not straddle the Bronx River.{{cn|date=September 2023}} In addition, what is today the Bronx was annexed to New York City in two stages: areas west of the Bronx River were annexed in 1874 while areas to the east of the river were annexed in 1895.{{cn|date=September 2023}}
* '''[[West Bronx]]''': all parts of the Bronx west of the '''Bronx River''' (as opposed to Jerome Avenue – this street is simply the "east-west" divider for designating numbered streets as "east" or "west." As the Bronx's numbered streets continue from Manhattan to south, on which the street numbering system is based, Jerome Avenue actually represents a longitudinal halfway point for Manhattan, not the Bronx.)<ref name="geo">{{cite web|title=Unlock the Grid, Then Ditch the Maps and Apps|date=February 24, 2012 |url=http://www.thirteen.org/metrofocus/2012/02/unlock-the-grid-then-ditch-the-maps-and-apps/|accessdate=October 30, 2015}}</ref>
* '''[[East Bronx]]''': all parts of the Bronx east of the '''Bronx River''' (as opposed to Jerome Avenue)<ref name="geo"/><ref>{{cite web|title=Geography & Neighborhoods|url=http://grandconcourse100.org/brief/geography|accessdate=October 30, 2015|url-status=dead|archiveurl=https://web.archive.org/web/20151227053358/http://grandconcourse100.org/brief/geography|archivedate=December 27, 2015}}</ref>

Under this system, the Bronx can be further divided into the following regions:
* '''Northwest Bronx''': the northern half of the West Bronx; the area north of Fordham Road and west of the Bronx River
* '''Southwest Bronx''': the southern half of the West Bronx; the area south of Fordham Road and west of the Bronx River
* '''Northeast Bronx''': the northern half of the East Bronx; the area north of Pelham Parkway and east of the Bronx River
* '''Southeast Bronx''': the southern half of the East Bronx; the area south of Pelham Parkway and east of the Bronx River

A second system divides the borough first and foremost into the following sections:
* '''[[North Bronx]]''': all areas not in the South Bronx (Southwest Bronx) – i.e. the Northwest Bronx, Northeast Bronx, and Southeast Bronx
* '''[[South Bronx]]''': the Southwest Bronx – south of Fordham Road and west of the Bronx River. This includes the areas traditionally considered part of the South Bronx.