If you want to run into a celebrity, you go to Hollywood. If you want to run into a billionaire, you should move to San Francisco.
There are more American billionaires than ever before, according to a new study, and Silicon Valley is their home turf. One out of every 11,600 people in San Francisco is a billionaire. That makes San Francisco, globally ranked fourth in number of billionaires, the city with the most billionaires per capita — by far