While home prices are down in many markets, the luxury housing market has remained strong. AOL Real Estate asked Luxist and NeighborhoodScout to find the most expensive neighborhoods around the country by ZIP code.

If you are real estate shopping these days and worried that prices could fall further across the country, buying in one of the most expensive ZIP codes in your region could be a smart strategy. "There is no doubt," says NeighborhoodScout's Dr. Andrew Schiller, "they do hold their value."