In Croatia, Kollar families are Croats by relative majority (from Banat, Vojvodina ), equally Hungarians (from Vukovar ), and very rarely Slovenes (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Beli Manastir area and in Pozega area.
Prevalence
About 10 people with faimily name Kollar live in Croatia today, in 6 households. There were 10 of them in the middle of the past century, and their number remains constant. They are located in 9 Croatian counties, in 8 cities and threee other places, mostly in Split (<10), Vukovar (<5), Zagreb (<5), Osijek (<5), and in Varazdin (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over eighty times, the first time 1664 in source Catholic Church Parish Records.