Oštarić families are Croats and they are mostly from the Island of Pag. In the past century, relatively most of Croatian residents bearing this family name were born on the Island of Pag and in Rijeka.
Prevalence
About 130 people with faimily name Oštarić live in Croatia today, in 60 households. There were 90 of them in the middle of the past century, and their number increased by 40 percent. They are located in 6 Croatian counties, in 9 cities and 6 other places, mostly in Kolan on the Island of Pag (45), Rijeka (25), Zagreb (15), Mandre on the Island of Pag (15), and in Zadar (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1938 in source Phone Book - Zagreb 1938.