In Croatia, Bllaca families are Albanians (from Sibenik ). In the past century, relatively most of Croatian residents bearing this family name were born in Kosovo.
Prevalence
Only a few people with faimily name Bllaca live in Croatia today, in one household only. They are located in one Croatian city only, in Sibenik (<10).
Outside Croatia
Family name Bllaca is present in 13 countries on four continents.