With results for all its precincts now in, it emerges that Brighton Beach (aka “Little Odessa”) voted 84.1% for Trump – his sixth highest result in all of NY’s ~300 neighborhoods.
The also heavily Sovok Jewish neighborhood of Seagate-Coney Island voted 81.4% for Trump.
(The big gray area on the map above is a single neighbood and only had 8 votes in total, which were evenly split between Trump and Cruz).
As you theorized: Brighton goes for Trump (mostly), evangelical ^H^H^H^H^H^H^H Orthodox Jews for Cruz. The richies in Manhattan go for Kasich. You can actually see the less upscale precincts east of Third Avenue going for Trump, whereas the superrich between Third and Fifth go for Kasich.
Cruz did pretty poorly outside of Orthodox Jews, which isn’t surprising when you insult the city.
These are huge outliers even relative to Trump’s outstanding performance in NY as a whole; as I write this, 96% of the votes have been counted and Trump is set to end up at 60% and with almost all of its delegates.
The only major region in NY state which Trump didn’t win was Manhattan which went for Kasich.