In Croatia, Bostjančić families are generally Croats (from Rijeka ), very rarely Slovenes (also from Rijeka ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and in Middle Bosnia (Zenica area).
Prevalence
About 10 people with faimily name Bostjančić live in Croatia today, in 6 households. There were 20 of them in the middle of the past century, and their number halved. They are located in only four naselja i to in Rijeka (<10), Matulji in Opatija area (<5), Opatija (<5), and in Marcelji in Rijeka area (<5).
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.