In Croatia, Ostreš families are Croats (from Zapresic ). In the past century, relatively most of Croatian residents bearing this family name were born in Zapresic and Zagreb.
Prevalence
About 50 people with faimily name Ostreš live in Croatia today, in 19 households. There were 90 of them in the middle of the past century, and their number decreased by 50 percent. They are located in four Croatian counties, threee cities and another small place , mostly in Zapresic (50), Zagreb (<5), Zadar (<5), and in Jalzabet in Ludbreg area (<5).
Outside Croatia
Family name Ostreš (including: Ostres , Ostresh ) is present in 6 countries on three continents. "Ostresh " is used by small number of people in the United States.
