What do you think about living in Upper East side, Lexington Ave? What people usually live there and are verybody there very rich? What about their nationalities?

Most of the super-rich people live between Lexington and Fifth. The UES especially east of Third Avenue is populated by a lot of Wall Street office workers of varying incomes - nobody poor or working-class, but not necessarily richy-rich either.

I'd say most people on the UES are white, native-born Americans, though there is the usual New York mix of dozens of random nationalities. No particular nationality other than American dominates.

I find the UES one of the most totally boring neighborhoods in the city.

Hey, that's MY totally boring neighborhood you're besmirching!!!