America's Priciest Housing Markets


Mercer Island, Wash.

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Average listing price: $1,143,521

Median household income: $115,910

Population (as of 2009): 24,530

Mercer Island, which contains just under 13 square miles, sits in the middle of Lake Washington in close proximity to Washington State’s largest city, Seattle.

Learn more about Mercer Island.

Next: Cupertino, Calif.

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