Oh, that’s very kind of you to say! Thank you so much, I’m very pleased that it’s being used and will keep my eyes out for your book. Will look forward to reading it when it comes out!

If you want to know more about the data, methods, or limitations, check out the (very short) preprint describing it on SocArXiv or the GitHub repository (linked within).

Feedback welcome. The map will update as more data becomes available. 5/5

osf.io/preprints/so...

Non-migrants? You can view the number of 'home grown' billionaires by hovering over a city. Around 23% of all billionaires represented here live in the same city they were born in, 82% in the same country.

For NYC: around 37% were born there. Chances of them leaving due to a 2% tax hike? Slim. 4/5

What about spatial concentration? If you want to compare the residence distribution of billionaires in Germany vs. France, you can do that here too. Toggles allow you to turn off birth/residence separately and filters allow you to select by country (or in the U.S., by state). 3/5

For example: how do elite origins vary across countries (or within)? Compare the international origins of London’s billionaires, for example, with the mostly domestic origins of Beijing or Munich’s billionaires by clicking on each city. 2/5

Article: archive.is/J7VH5