Upper West Side of Manhattan
Though New York is comprised of five boroughs it is well known that nothing of any interest happens outside the borough of Manhattan*. In fact those living in Manhattan oft refer to the outer boroughs as being overseas, since you need to cross a bridge to get to them. Which is fine.
The Upper West Side does what it says on the jacket, though it is in fact only half way up the actual island that is Manhattan. But of course above the UWS is Harlem and somehow we doubt that those who named the UWS included Harlem in their version of New York.
*See also North of the river in London.