In Croatia, Čičin-Šain families are almost entirely Croats (from Vodice ), barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Split and Zagreb.
Prevalence
About 60 people with faimily name Čičin-Šain live in Croatia today, in 40 households. There were 30 of them in the middle of the past century, and their number doubled. They are only located in in 9 Croatian cities, mostly in Zagreb (20), Vodice (15), Rijeka (10), Split (10), and in Sibenik (<5).
Outside Croatia
Family name Čičin-Šain is present in 6 countries on two continents. The family name "Cicin-Sain " is used by small number of people in Austria and small number 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.