Start with Anderson VANDERBILT Cooper.
In total, they say 705 billionaires lived in the US in 2018 and they had a combined total wealth of more than $3 trillion. But they’re clustered in cities, according to the group, and San Francisco has the highest concentration.
One in every 11,612 San Franciscans is a billionaire. They could, theoretically, brush elbows with one of the city’s approximately 7,000 strong homeless population.