I haven’t had any experience with Latina’s in central NJ since moving out there but it seems like north jersey specifically jersey city, north Bergen, secaucus area are where they often dwell. Those are the latinas that are from NYC (Bronx, Brooklyn, Manhattan)
The Latina that’s at Linas in Roselle stays in staten island, and that’s where I would believe most of any latinas are in central NJ that’s where they come from.