In Croatia, Kostanarević families are Croats (from Ivanic-Grad area ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb.
Prevalence
Only a few people with faimily name Kostanarević live in Croatia today, in two households only. They are located in only one small Croatian place, in Susnjari in Ivanic-Grad area (<5).
Outside Croatia
Family name Kostanarević is present in this form only in Croatia.