In Croatia, Bailo families are Croats (from Trogir area ). In the past century, relatively most of Croatian residents bearing this family name were born in Trogir area and in Zagreb.
Prevalence
About 60 people with faimily name Bailo live in Croatia today, in 30 households. There were 60 of them in the middle of the past century, and their number remains constant. They are located in four Croatian counties, in 7 cities and two other places, mostly in Zadar (15), Zagreb (10), Trogir (10), and in Prgomet (<10) and Ljubitovica (<10) in Trogir 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.