In Croatia, Repak families are predominantly Croats (from Jastrebarsko area ), rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Hrvatska Kostajnica area and in Sisak. In Paukovac in Hrvatska Kostajnica area every ninth inhabitant had the family name Repak.
Prevalence
About 30 people with faimily name Repak live in Croatia today, in 12 households. There were 80 of them in the middle of the past century, and their number decreased significantly. They are only located in four Croatian cities and 6 other places, mostly in Paukovac in Hrvatska Kostajnica area (10), Hrastelnica (<10), Podvinje (<5), Slavonski Brod (<5), and in Petrinja (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.