Kolaković families are mainly Croats and they are mostly from Otocac , rarely Bosniaks (from Cazinska Krajina Region, Bosnia). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Otocac.
Prevalence
About 350 people with faimily name Kolaković live in Croatia today, in 150 households. There were 290 of them in the middle of the past century, and their number increased by 20 percent. They are located in almost all Croatian counties, in 29 cities and 46 other places, mostly in Zagreb (95), Karlovac (20), Andrijasevci in Vinkovci area (20), Slavonski Brod (10), and in Sesvete (10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.