Kunštić families are Croats and they are mostly from Djakovo area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Djakovo area.
Prevalence
About 80 people with faimily name Kunštić live in Croatia today, in 30 households. There were 60 of them in the middle of the past century, and their number increased by 20 percent. They are located in 8 Croatian counties, in 6 cities and 6 other places, mostly in Zagreb (30), Djakovo (20), Kosnica in Pregrada area (<10), Kapelica (<10), and in Bratkovec in Klanjec area (<10).
Outside Croatia
Family name Kunštić 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.