What are some of the most richest towns in America?

Well I'm writing a story and I need a town near a urban area, It need to have considerable amount of wealth and power. One of those towns could be considered Potomac, Maryland cause it right near D.C its a really rich town with huge houses, private schools, upscale stores and all the get up. I don't... show more Well I'm writing a story and I need a town near a urban area, It need to have considerable amount of wealth and power. One of those towns could be considered Potomac, Maryland cause it right near D.C its a really rich town with huge houses, private schools, upscale stores and all the get up. I don't really want to use Potomac cause well I live in Maryland and I want a good change in scenery. Also I don't want to use towns like Aspen, Beverly Hills and Westchester cause the towns are overused as places in stories and too well known. Please give me feedback on this :]
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