A postal code is a five digit code used to help postal services deliver mail and packages. Here's what the numbers mean and how they determine yours.

See the top 10 most expensive ZIP codes in the country, including Fisher Island, a private Miami island, and Bel Air, California.

Retailers collect ZIP codes from customers, which can protect against fraud, but also helps a consumer database marketer collect personal information on us without our permission.

MA is one of the wealthiest states in the country, and new research suggests that Greater Boston is the wealthiest part of ...

South Florida's Fisher Island represents "the perfect American dream," top developer Isaac Toledano says about the enclave ...