In Croatia, Raff families are generally Croats (from Banat, Vojvodina ), very rarely Czechs. In the past century, relatively most of Croatian residents bearing this family name were born in Banat, Vojvodina.
Prevalence
About 10 people with faimily name Raff live in Croatia today, in four households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in one Croatian city only, in Osijek (10).