In Croatia, Bosco families are Croats (from Kraljevica ).
Prevalence
Only a few people with faimily name Bosco live in Croatia today, in three households only. They are located in only four naselja i to in Krizisce (<5), Sroki in Rijeka area (<5), Klana in Opatija area (<5), and in Jablanac (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1924 in source Emigration Commission Zagreb.