Krolo families are Croats and they are mostly from Sinj area. According to some sources they are from Busko Blato area. In the past century, relatively most of Croatian residents bearing this family name were born in Sinj area and in Split. In places Kamensko , Strmendolac and Gizdavac in Sinj area every fourth inhabitant had the family name Krolo.
Prevalence
About 880 people with faimily name Krolo live in Croatia today, in 340 households. There were 490 of them in the middle of the past century, and their number increased by 80 percent. They are located in the most of Croatian counties, in 33 cities and 50 other places, mostly in Split (245), Zagreb (130), Gornji Muc in Sinj area (60), Osijek (50), and in Kamensko in Sinj area (50).
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.