Bule families are Croats and they are mostly from Herzegovina. In the past century, relatively most of Croatian residents bearing this family name were born in Herzegovina (Capljina area) and in Dubrovnik. In places Zvirovići , Prćavci and Cerno in Herzegovina every eighth inhabitant had the family name Bule.
Prevalence
About 180 people with faimily name Bule live in Croatia today, in 70 households. There were 60 of them in the middle of the past century, and their number tripled. They are located in 10 Croatian counties, in 15 cities and 11 other places, mostly in Zagreb (80), Split (20), Metkovic (15), Ploce (15), and in Dubrovnik (15).
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.