Kostelić families are Croats and they are mostly from Ogulin. In the past century, relatively most of Croatian residents bearing this family name were born in Ogulin and Zagreb.
Prevalence
About 200 people with faimily name Kostelić live in Croatia today, in 100 households. There were 250 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 10 Croatian counties, in 18 cities and 13 other places, mostly in Ogulin (70), Zagreb (35), Ribarici (25), Rijeka (15), and in Osijek (10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.