For the next couple of weeks we will be checking out some homes in the most expensive zip codes in the United States, up today, 33404. This zip code is is in the Riviera Beach/Singer Island section of Palm Beach County, Florida and has a median price of $2,890,000 with an appreciation rate of 563% since 1990.

Singer Island was founded by Paris Singer, the Singer Sewing Machine company founder who, rumor has it, bought the island as a present for his mistress.

Luxist