In Croatia, Gunčar families are predominantly Croats (from Zagreb ), rarely Slovenes.
Prevalence
Only a few people with faimily name Gunčar live in Croatia today, in two households only. They are located in one Croatian city only, in Zagreb (<5).
Outside Croatia
Family name Gunčar (including: Guncar , Gunchar ) is present in 8 countries on three continents. "Gunchar " is used by small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.