Originally Posted by TheKillingJoke
Don't know if anybody ever saw the little table on the link below. It shows the background of the Vors in the "Russian" underworld. It also features a link to a Vor database. Don't know how much of it is accurate nowadays though;

http://www.unz.com/akarlin/how-russian-is-the-russian-mafia/

The biggest Vor suppliers seem to be:

Georgians: a whopping 242 vors
Russians: 53 vors
Armenians: 30 vors
Yezidis (mostly from Georgia and Armenia): 26 vors - which is disproportionate seeing their community only numbers about 150000 in the former USSR
Azerbaijanis: 16 vors
Chechens: 9 vors
Abkhazians (though most of those seem to be of ethnic Georgian origin as well): 9 vors
Jews (often from Ukraine): 7 vors

http://www.primecrime.ru/ is actually a better source for Vor database, they have list of current and old Vory and also known events between them, making timelines, etc.. Sadly, it's only in Russian, but you can use the browser translator option is you use Chrome.