In Croatia, Kukuljača families are Croats (from Hrvatska Kostajnica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Hrvatska Kostajnica area.
Prevalence
Only a few people with faimily name Kukuljača live in Croatia today, in four households only. They are located in only two Croatian places: in Cetvrtkovac in Hrvatska Kostajnica area (<10) and Sisak (<5).
Outside Croatia
Family name Kukuljača 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 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.