Well, everyone has different experiences there. I’ve lived in the same house for 25 years, and neighbors have come and gone. I barely know who.lives in my neighbors houses . One house was never for sale that I know of. Just one day I saw someone needs new move in. And have never spoken to or seen who lives there. They keep a low profile never see them in the yard or outside at all.
Same here in my neighborhood in NJ; the few people who remain from the days of annual block parties are far outnumbered by newcomers. I attribute this to two things: The general divide-and-conquer strategy of the Bolsheviks to prevent any real unity, and the fact that more and more people don’t speak English.