In Croatia, Kukovačec families are almost entirely Croats (from Sveti Ivan Zelina ), barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Sveti Ivan Zelina and Zagreb.
Prevalence
About 50 people with faimily name Kukovačec live in Croatia today, in 16 households. There were 50 of them in the middle of the past century, and their number remains constant. They are located and four other Croatian places, mostly in Sveti Ivan Zelina (10), Gornje Psarjevo (10), Krapina (<10), Vinkovci (<10), and in Graberje Ivanicko (<10).
Outside Croatia
Family name Kukovačec is present in this form only in Croatia.
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.