America's most expensive ZIP code isn't in California or New York

Seven of the 10 most expensive ZIP codes in the U.S. are in California. But the nation's priciest ZIP code lies elsewhere.
Morning Call PA

EAST SIDE TO CHANGE ZIP CODE 8,500 ADDRESSES BETWEEN LEHIGH RIVER AND BETHLEHEM WILL USE 18109, STARTING JULY 1. POSTAL SERVICE SAYS THE MOVE WILL HELP ...

First it was telephones. Now it’s the mail. Overwhelmed by the growth of the suburbs and the constant creation of new addresses, the U.S. Postal Service has informed 8,574 customers in the 18103 ZIP ...