The NYC “Metropolitan Area” consists of thirty counties including the five that make up NYC itself. Most people don’t realize that it’s the largest urban area in the US by both people AND land mass.
Source: https://en.wikipedia.org/wiki/New_York_metropolitan_area
I used to live in Ulster county. No way in hell Ulster is a suburb of NYC.
I know, I live in it—but that also includes “exurbs” and other neither core, edge, nor suburban proper areas:
https://en.wikipedia.org/wiki/Metropolitan_area