Vlašić families are Croats and they are mostly from north Herzegovina. According to some sources they originate from the Vlasic Mountain or from Istria. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in North Herzegovina (Jablanica area). In Sovići in North Herzegovina every ninth inhabitant had the family name Vlašić.
Prevalence
About 2400 people with faimily name Vlašić live in Croatia today, in 980 households. There were 2100 of them in the middle of the past century, and their number increased by 10 percent. They are located in all Croatian counties, in 69 cities and 233 other places, mostly in Zagreb (570), Strmec in Samobor area (125), Vela Luka on the Island of Korcula (105), Dubrovnik (85), and in Karlovac (70).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over sixty times, the first time 1606 in source Catholic Church Parish Records.