In Croatia, Ostopanj families are Croats (from Nasice area ). In the past century, relatively most of Croatian residents bearing this family name were born in Nasice area and in Osijek.
Prevalence
About 20 people with faimily name Ostopanj live in Croatia today, in 8 households. They are located in only four naselja i to in Slavonski Brod (10), Podgorac in Nasice area (<10), Luzan (<5), and in Razbojiste in Nasice area (<5).
Outside Croatia
Family name Ostopanj is present in this form only in Croatia.