This is how bad we've gotten about status in our society. It's not just about zip codes, it's also about area codes. The 310 area code covers a territory of beaches, rich homes and nice neighborhoods. There are also quite a few bad neighborhoods, too, but everyone ignores those.
When it was proposed recently that the 310 area code be split up to create a new area code, one would have thought the proposal was asking that homes be uprooted and moved to another part of the city. People are furious. Not because they have to memorize a new phone number, or plug in new info into their PDAs. It's because the 310 area code massages their egos. When someone asks for their phone numbers, and they reply 310-, it gives them a sense of superiority. A feeling that they're better than you. 818? 805? 213? 626? Poor soul, you haven't succeeded in life. Indeed, you're a lowlife. Trailer trash.
Now keeping up with the Joneses is more than having the latest Lexus. It's about the phone number you give out.