JERSEY HAS FORBES' RICHEST NEIGHBORHOOD: Diddy, Chris Rock Stevie Wonder among residents in the 07620.

Alpine, New Jersey, home of hip hop stars such as Sean "Diddy" Combs, has just topped Forbes.com's list of the most expensive zip codes in the United States.

Located some 20 miles from Manhattan, Alpine (zip code 07620) is a small community of sprawling mansions with a median asking price of $4.14 million, Forbes said on its web site, adding that stars drawn to the neighborhood include musician Stevie Wonder and comedian Chris Rock.

Atherton in California (zip code 94027) was the second most expensive, with a median asking price for homes of $3.85 million, followed by New York City's West Village (zip code 10014) with a $3.5 million median asking price.

Those neighborhoods, however, have not been immune to the recent economic downturn that has hammered real estate prices. Forbes said prices fell 23 percent in the past year in Alpine and Atherton, and by 24 percent in the West Village.

Other prestigious neighborhoods that made the list include Beverly Hills (90210) in fifth place and Aspen, Colorado (81611), in 20th place. All of the top 10 zip codes were in New York, New Jersey or California.