Greganić families are Croats and they are mostly from Belisce area. In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Belisce area.
Prevalence
About 170 people with faimily name Greganić live in Croatia today, in 70 households. There were 180 of them in the middle of the past century, and their number decreased by 10 percent. They are located in 6 Croatian counties, in 10 cities and 16 other places, mostly in Osijek (30), Valpovo (20), Zagreb (20), Podgorac in Nasice area (20), and in Marijanci in Belisce area (15).
Outside Croatia
Family name Greganić is present in this form only in Croatia.
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.