In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka.
Prevalence
About 60 people with faimily name Ivancich live in Croatia today, in households. There were 30 of them in the middle of the past century, and their number doubled. They are located in one Croatian city only, in Rijeka (<5).
Outside Croatia
Family name Ivancich is present in 15 countries on four continents. The family name "Ivancich " is used by some 500 people in Argentina , about 300 in the United States , and some 200 people in Italy.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over eighty times, the first time 1614 in source Catholic Church Parish Records.