When San Francisco is home to more billionaires than ever, and a family of four earning $117,000 is considered "low-income," who are the city's most valuable citizens?

When San Francisco is home to more billionaires than ever, and a family of four earning $117,000 is considered "low-income," who are the city's most valuable citizens? https://t.co/rEmAA8cJBR

— NYT Business (@nytimesbusiness) December 20, 2018