County Income
The US county with the highest per-capita income per resident is Marin County, California. It weighs in at $44,962 per person, with a population of 247,289 (2000 Census).
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County Population
The most populous county in the United States is Los Angeles County, California with a population of 9,519,338 people.
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Old Age
Nobody in the United States has died from old age since 1951.
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ZIP Code
The ZIP Code with the higest average income per tax return is New York, NY 10111. The average tax return in 2004 was $1,234,972.
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