In Croatia, Basiaco families are mainly Croats (from Buzet area ), equally Italians (from Buje ). In the past century, relatively most of Croatian residents bearing this family name were born in Labin and Buzet. In Krajići in Buzet area every third inhabitant had the family name Basiaco.
Prevalence
About 10 people with faimily name Basiaco live in Croatia today, in 7 households. There were 0 of them in the middle of the past century, and their number multiplied. They are located in four Croatian cities only: in Buje (<10), Labin (<5), Novigrad (<5), and in Cepljani (<5).
Outside Croatia
Family name Basiaco is present in 6 countries on four continents.
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.