From the coastal bluffs of Newport Coast, CA, to the private shores of Fisher Island, FL, America’s priciest ZIP codes have much in common: sprawling estates defined by privacy, panoramic vistas, and ...

While the rich and famous are busy flocking to Indian Creek Village’s Billionaire Bunker, that one-half-square-mile isle still falls behind the even smaller (0.27 square miles!), ultrarich enclave of ...