Kolega families are Croats and they are mostly from the Island of Ugljan. In the past century, relatively most of Croatian residents bearing this family name were born in Zadar and on the Island of Ugljan. In Kali on the Island of Ugljan every eighth inhabitant had the family name Kolega.
Prevalence
About 510 people with faimily name Kolega live in Croatia today, in 220 households. There were 360 of them in the middle of the past century, and their number increased by 40 percent. They are located in 8 Croatian counties, in 10 cities and 9 other places, mostly in Kali on the Island of Ugljan (240), Zadar (165), Zagreb (40), Rijeka (15), and in Split (15).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1825 in source Catholic Church Parish Records.