In Croatia, Breccia families are Italians (from Porec ). In the past century, relatively most of Croatian residents bearing this family name were born in Porec.
Prevalence
Only a few people with faimily name Breccia live in Croatia today, in two households only. There were 10 of them in the middle of the past century, and their number decreased significantly. They are located in one Croatian city only, in Pula (<5).
Outside Croatia
Family name Breccia is present in 16 countries worldwide. The family name "Breccia " is used by some 1000 people in Italy , about 700 in Argentina , and some 90 people in the United States.
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.