In Croatia, Osip families are generally Croats (from Labin area ), very rarely Italians (from Pula ), and . In the past century, relatively most of Croatian residents bearing this family name were born in Labin area and in Pula. In Draguzeti in Labin area every fifth inhabitant had the family name Osip.
Prevalence
About 30 people with faimily name Osip live in Croatia today, in 16 households. There were 40 of them in the middle of the past century, and their number decreased by 20 percent. They are located in only two Croatian places: in Draguzeti in Labin area (20) and Pula (15).