Oštarčević families are Croats and they are mostly from Ogulin area. In the past century, relatively most of Croatian residents bearing this family name were born in Ogulin area and in Zagreb.
Prevalence
About 80 people with faimily name Oštarčević live in Croatia today, in 30 households. There were 90 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 6 Croatian counties, in 8 cities and 6 other places, mostly in Zagreb (35), Karlovac (10), in Tounj (<10) and Gerovo Tounjsko (<10) in Ogulin area, and in Ogulin (<5).
Outside Croatia
Family name Oštarčević is present in five countries on four continents. The family name "Ostarcevic " is used by some 50 people in Australia , small number in the United States , and small number of people in France.
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.