On the east coast it tends to be true. As others have mentioned it might not hold on the west coast. I just wanted to give a counterexample that shows how shallow the OP's argument is. The reality is that there are many factors which make certain parts of a city more desirable to live in than another. In Australia proximity to the beach is strongly correlated with desirability. In other places the reasons will differ. Whatever the reason, I don't believe for a second this oversimplified fairy tale about the prevailing wind.