In Croatia, Čvorišćec families are Croats (from Ivanic-Grad ). In the past century, relatively most of Croatian residents bearing this family name were born in Ivanic-Grad and in Zagreb.
Prevalence
About 20 people with faimily name Čvorišćec live in Croatia today, in 9 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in four Croatian counties, four cities and four other places, mostly in Posavski Bregi (<10), Zagreb (<10), Ivanic-Grad (<5), Zadar (<5), and in Buje (<5).
Outside Croatia
Family name Čvorišćec 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 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.