[TMWNN]

>Everything north of ~~Westchester~~ the speaker is Upstate.

FTFY

Similar phenomenon occurs in England, where "the north" and "the south" always begin to the north/south of whoever is being asked. <https://www.youtube.com/watch?v=ENeCYwms-Cc>

[Kon-Peki]

I think the concept is everywhere.

Like everything south of 175th Street in Chicagoland is Downstate Illinois. Indianapolis is in the center of Indiana, so they call everything outside the inner ring of suburbs {first half of city name}-tucky, as in a pejorative reference to Kentucky.

[TMWNN]

>Like everything south of 175th Street in Chicagoland is Downstate Illinois.

"And as much as I would like to attend, l haven't been above 72nd Street in over a decade." —Jack Donaghy, 30 Rock