6. Paris
Number of billionaires: 22
Billionaires per capita: 9.80 per 1,000,000 people
The capital of France, the next one on the list of richest cities in the world with most billionaires per capita is home to the richest woman in Europe, as it is home to Liliane Bettencourt, daughter of the founder of L’Oreal, who has a net worth of $36 billion.
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