Kapustić families are Croats and they are mostly from Ivanec. In the past century, relatively most of Croatian residents bearing this family name were born in Varazdin and Ivanec. In Kamenički Vrhovec in Lepoglava every eighth inhabitant had the family name Kapustić.
Prevalence
About 160 people with faimily name Kapustić live in Croatia today, in 80 households. There were 160 of them in the middle of the past century, and their number remains constant. They are located in 8 Croatian counties, in 11 cities and 12 other places, mostly in Bedenec (35), Varazdin (35), Zagreb (20), Ivanec (20), and in Kamenicki Vrhovec (15).
Outside Croatia
Family name Kapustić is present in three countries on two continents. The family name "Kapustic " 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 few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.