In Croatia, Oštrec families are Croats (from Cazma area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Cazma area.
Prevalence
About 50 people with faimily name Oštrec live in Croatia today, in 20 households. There were 70 of them in the middle of the past century, and their number decreased by 30 percent. They are located in threee Croatian counties, four cities and 13 other places, mostly in Zagreb (15), Velika Hrastilnica in Ivanic-Grad area (<10), Poljana (<10), Kutina (<5), and in Novoselec in Ivanic-Grad area (<5).
Outside Croatia
At least three families with this surname emigrated from Croatia to France (2) and the United States (1). Family name Oštrec is present in three countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.