In Croatia, Fratrović families are Croats (from Nova Gradiska area ). In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and in Nova Gradiska area.
Prevalence
About 10 people with faimily name Fratrović live in Croatia today, in four households only. There were 40 of them in the middle of the past century, and their number decreased significantly. They are located in only four Croatian places: in Karlovac (<10), Bacin Dol in Nova Gradiska area (<5), Kitisanci (<5), and in Bukovlje in Slavonski Brod area (<5).
Outside Croatia
Family name Fratrović is present in two countries.