In Croatia, Kadum families are generally Croats (from Porec ), very rarely Italians (from Pula ), and barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Porec and Pula. In Radoši kod Žbandaja in Porec nearly every inhabitant had the family name Kadum.
Prevalence
About 70 people with faimily name Kadum live in Croatia today, in 30 households. There were 40 of them in the middle of the past century, and their number increased by 60 percent. They are located in two Croatian counties, four cities and 7 other places, mostly in Porec (30), Zbandaj (15), Pula (10), Radosi kod Zbandaja (<10), and in Rijeka (<5).