Zrinšćak families are Croats and they are mostly from Bjelovar area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Rijeka.
Prevalence
About 120 people with faimily name Zrinšćak live in Croatia today, in 60 households. There were 30 of them in the middle of the past century, and their number multiplied. They are located in 10 Croatian counties, in 10 cities and 23 other places, mostly in Draganic in Karlovac area (20), Zagreb (15), Opatija (15), Kapela in Bjelovar area (15), and in Vranja in Buzet area (10).
Outside Croatia
Family name Zrinšćak is present in five countries on three continents. The family name "Zrinscak " is used by small number of people in Canada , small number in the United States , and small number of people in France.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.