My experience with Chicago — since arriving here as a single “Bochur” 39 years ago — has been:
* The Orthodox Jewish community of Chicago is among the best for Hachnossas Orchim (i.e., welcoming strangers).
* This is true of all segments: Chassidic, Lithuanian, Modern Orthodox, etc.
* Just walk into any Shul, Bais Medrash, Kollel… and see for yourself.
* If your experience parallels mine, you will get multiple greetings, multiple invitations for Shabbos…