ROBERTO SCHMIDT/AFP/Getty Images

No. 10: Fisher Island, Fla.

Miami-Fort Lauderdale MSA: Miami-Dade County
Median home sale price: $1,876,462
Price change YOY: -1.8%
Population: 467
Median household income: $200,000+

Fisher Island, three miles off the Miami shore, is accessible only by private boat or ferry. The island was once owned by William K. Vanderbilt, who traded it in the 1920s to Carl Fisher, after whom the island was named, for Fisher's yacht.

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