Čolak families are mainly Croats and they are mostly from Nin area. According to some sources they are from Herzegovina, rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Herzegovina (Ljubuski area) and in Herzegovina (Siroki Brijeg area). In Krneza in Nin area every fourth inhabitant had the family name Čolak.
Prevalence
About 770 people with faimily name Čolak live in Croatia today, in 340 households. There were 330 of them in the middle of the past century, and their number more than doubled. They are located in almost all Croatian counties, in 46 cities and 61 other places, mostly in Zagreb (210), Zadar (95), Split (80), Sesvete (35), and in Krneza in Nin area (35).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 2007 in source Encyclopaedia of Croatian Surnames.