Most of this comes as no surprise, because its mostly east coast and west coast real estate markets, but Alpine New Jersey? That was a new one for me. It has a median household income of $125,000, which I believe is just a hair higher than Douglas County CO! And no Florida? What's up with that? At least Colorado was represented in the top 10 most expensive zip codes for buyers at #4 and they are calling it Woody Creek, which is outside Aspen. Go Aspen!