In Croatia, Blasco families are Croats (from Pula ). In the past century, relatively most of Croatian residents bearing this family name were born in Pula.
Prevalence
Only a few people with faimily name Blasco live in Croatia today, in one household only. There were 10 of them in the middle of the past century, and their number decreased significantly. They are located in only two Croatian places: in Pula (<5) and Krnica in Pula area (<5).
Outside Croatia
Family name Blasco is present in 62 countries worldwide. "Blaszko " is used by some 100 people in Poland , about 80 in Argentina , and some 70 people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over forty times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.