In Croatia, Kostopeč families are Croats (from Dubrovnik area ). In the past century, relatively most of Croatian residents bearing this family name were born in Dubrovnik area and in Dubrovnik. In Uskoplje in Dubrovnik area every fifth inhabitant had the family name Kostopeč.
Prevalence
About 20 people with faimily name Kostopeč live in Croatia today, in 11 households. There were 30 of them in the middle of the past century, and their number decreased by 20 percent. They are located in only five naselja i to in Zvekovica (15) and Uskoplje (<10) in Dubrovnik area, Dubrovnik (<5), Zagreb (<5), and in Gruda in Dubrovnik area (<5).
Outside Croatia
Family name Kostopeč is present in this form only in Croatia.
