Basioli families are Croats and they are mostly from Sali on Dugi (Long) Island. In the past century, relatively most of Croatian residents bearing this family name were born on Dugi, Long Island and in Zadar.
Prevalence
About 70 people with faimily name Basioli live in Croatia today, in 40 households. There were 70 of them in the middle of the past century, and their number remains constant. They are only located in four Croatian cities and two other places, mostly in Sali on Dugi (Long) Island (35), Zadar (25), Zagreb (<10), Rijeka (<5), and in Split (<5).
Outside Croatia
Family name Basioli is present in five countries on three continents. The family name "Basioli " is used by small number of people in Norway , small number of people in the United States , and small number of people in Australia.
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.