In Croatia, Bastijančić families are predominantly Croats (from Labin area ), rarely Italians (from Pula ), and barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Pula and Zagreb. In Čambarelići in Labin area every eighth inhabitant had the family name Bastijančić.
Prevalence
About 60 people with faimily name Bastijančić live in Croatia today, in 30 households. There were 60 of them in the middle of the past century, and their number remains constant. They are located in 8 Croatian counties, in 6 cities and 7 other places, mostly in Pula (20), Zagreb (10), Rijeka (<10), Cambarelici in Labin area (<10), and in Karlovac (<10).
Outside Croatia
Family name Bastijančić is present in two countries on two continents. The family name "Bastijancic " is used by few 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 1902 in source Hartmann's General List of Apartments in Zagreb.