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10 Wealthiest Counties in United States 2023 

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Nassau County, New York - $126,704 

10 Wealthiest Counties in US

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Douglas County, Colorado - $127,824

10 Wealthiest Counties in US

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Arlington County, Virginia - $128,425 

10 Wealthiest Counties in US

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Howard County, Maryland - $129,821 

10 Wealthiest Counties in US

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Marin County, California - $131,523 

10 Wealthiest Counties in US

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Fairfax County, Virginia - $134,201 

10 Wealthiest Counties in US

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San Mateo County, California - $136,935 

10 Wealthiest Counties in US

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Santa Clara County, California - $140,358 

10 Wealthiest Counties in US

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Falls Church, Virginia - $155,248 

10 Wealthiest Counties in US

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Loudoun County, Virginia - $156,952 

10 Wealthiest Counties in US