Vaci families are mainly Croats and they are mostly from Osijek area , but often Hungarians (also from Osijek area ). In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Osijek area.
Prevalence
About 70 people with faimily name Vaci live in Croatia today, in 30 households. There were 50 of them in the middle of the past century, and their number increased by 60 percent. They are located in 6 Croatian counties and 8 other places, mostly in Laslovo in Osijek area (35), Zagreb (<10), Vrpolje in Djakovo area (<10), Cepin in Osijek area (<10), and in Nustar in Vinkovci area (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.