Bajo families are Croats and they are mostly from Opuzen area. In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Travnik area) and in Opuzen area.
Prevalence
About 170 people with faimily name Bajo live in Croatia today, in 70 households. There were 50 of them in the middle of the past century, and their number more than tripled. They are located in the most of Croatian counties, in 22 cities and 19 other places, mostly in Metkovic (50), Zagreb (15), Split (10), Bijeli Vir in Opuzen area (10), and in Dubrovnik (<10).
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.