Kukolj families are often Croats and they are mostly from middle Bosnia , less frequently Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Maglaj area) and in Knin. In places Matina and Lugovi in Middle Bosnia every eighth inhabitant had the family name Kukolj.
Prevalence
About 300 people with faimily name Kukolj live in Croatia today, in 150 households. There were 310 of them in the middle of the past century, and their number remains constant. They are located in the most of Croatian counties, in 35 cities and 50 other places, mostly in Knin (30), Zagreb (25), Rijeka (15), Pula (10), and in Bjelovar (10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.