In Croatia, Jasak families are almost entirely Croats (from North Herzegovina ), very rarely Bosniaks (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in North Herzegovina (Jablanica area) and in Dubrovnik. In Sovići in North Herzegovina every hundredth inhabitant had the family name Jasak.
Prevalence
About 40 people with faimily name Jasak live in Croatia today, in 18 households. There were 0 of them in the middle of the past century, and their number multiplied. They are located in 6 Croatian counties, in 6 cities and four other places, mostly in Zagreb (20), Dubrovnik (<10), Cavtat in Dubrovnik area (<5), Zadar (<5), and in Podgora in Makarska area (<5).