Comment by foxglacier

Gated communities don't count because residents have to be wealthy enough to buy their way in, so they're populated by a non-violent-criminally-biased sample of the general population. Some countries might count as gated communities if they're heavily populated by 1st generation immigrants who had to be wealthy to get in, otherwise no, they're just full of whatever random people were born there or moved there without any selection pressure against crime.