Like why do I feel like I’m supposed to be able to name the seven boroughs? I can’t tell you anything about L.A., Chicago, Boston, etc.
Edit: to clarify: I mean that everyone in America are expected to know NYC. Not just New Yorkers. Obviously everyone should know the layout of where they live.
To be fair, four of the five boroughs have greater populations than multiple states (Staten Island being the exception). I don’t think any other city in the US has comparable subdivisions.
It’s also hard to overstate the historical and cultural significance of NYC in the US. And this is coming from a New Englander who is obliged to say, “New York sucks.”