Odak families are Croats and they are mostly from Trogir area. According to some sources they are from west Herzegovina (Podvornica). In the past century, relatively most of Croatian residents bearing this family name were born in Drnis and Split.
Prevalence
About 690 people with faimily name Odak live in Croatia today, in 290 households. There were 470 of them in the middle of the past century, and their number increased by 50 percent. They are located in almost all Croatian counties, in 42 cities and 40 other places, mostly in Zagreb (165), Split (115), Opuzen (75), Siveric (55), and in Bristivica in Trogir area (45).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.