The greatest wealth in the Philadelphia region still remains concentrated around Center City, as affluent urban ZIP codes ...

On the municipal level, seven Los Angeles ZIP codes made the top 100, more than any other city. Newport Beach, Calif., just to the south, was next, with six ZIP codes on the list.

Six of the nation’s 10 most expensive ZIP codes are in New York City, with two more super-pricey neighborhoods not far away in New Jersey and Long Island. Forbes magazine, in its annual survey ...