So Larchmont,Scarsdale and Chappaqua are considered "upstate"?
Actually yes, to someone who lives in New York (keeping in mind the three parts that make up the state of New York - New York, Long Island and Upstate.) Occasionally you will find that rare City-ite that will recognize a fourth geographical part of the state. That part is called Westchester - which is where those snooty locales you mentioned are situated...
More often than not, those that recognize the geographical division called "Westchester" tend to 'live' in New York during the week and in "Westchester" on weekends and holidays. They recognize that fourth geographical division of the state because they think they are somehow better than those plebeians who live Upstate..
Now to us who live in "Upstate NY"(by the previously mentioned division of the NY state geographical map), the real Upstate is up around Lake George.. ;-)
So here I am 70 miles nw of New York. I'm Upstate... ;-)