In Croatia, Culjaga 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 and in Sisak. In Staza in Hrvatska Kostajnica area every tenth inhabitant had the family name Culjaga.
Prevalence
About 60 people with faimily name Culjaga live in Croatia today, in 30 households. They are located and 8 other Croatian places, mostly in Sisak (20), in Staza (15) and Bistrac (<10) in Hrvatska Kostajnica area, Popovaca in Kutina area (<5), and in Kutina (<5).
Outside Croatia
Family name Culjaga is present in this form only in Croatia.