Bulaja families are usually Croats and they are mostly from middle Bosnia , rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Travnik area) and in Split.
Prevalence
About 150 people with faimily name Bulaja live in Croatia today, in 60 households. There were 70 of them in the middle of the past century, and their number doubled. They are located in the most of Croatian counties, in 17 cities and 16 other places, mostly in Split (30), Zagreb (25), Viskovci (20), and in Jaksic (10) and Tekic (10) in Pozega area.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 2007 in source Encyclopaedia of Croatian Surnames.