What townies in my neighborhood call the block that I used to live on:

"Little Mexico."

This (older middle-aged) (white) woman who I had met at a neighborhood bar was the child of (Lithuanian) immigrants and had lived in the neighborhood all her life, and when we were talking about the neighborhood, how long I had lived there, etc., and I had mentioned where my old apartment was, she was like, "Oh, yeah, that stretch is called 'Little Mexico'.".

HONESTLY.  A single city block is named that way!  How very old neighborhood-y and hyperlocal.