In Croatia, Oštrina families are almost entirely Croats (from Slunj ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Slunj and Karlovac.
Prevalence
About 30 people with faimily name Oštrina live in Croatia today, in 16 households. There were 20 of them in the middle of the past century, and their number increased by 90 percent. They are located and threee other Croatian places, mostly in Podmelnica (20), Karlovac (<10), Zagreb (<5), Grabovac in Slunj area (<5), and in Vrbovsko (<5).
Outside Croatia
Family name Oštrina is present in 6 countries on two continents.
