In Croatia, Komosar families are predominantly Serbs, rarely Croats (from Labin ), and very rarely Bosniaks (also from Labin ). In the past century, relatively most of Croatian residents bearing this family name were born in Bosnian Krajina (Prijedor area) and in Zagreb.
Prevalence
About 30 people with faimily name Komosar live in Croatia today, in 19 households. They are located in 7 Croatian counties, in 7 cities and two other places, mostly in Zagreb (15), Sisak (<10), Labin (<10), Velika Gorica (<5), and in Rijeka (<5).
Outside Croatia
At least one family with this surname emigrated from Croatia to the United States. Family name Komosar is present in four countries on two continents. The family name "Komosar " is used by few people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1942 in source Phone Directory of the Independent State of Croatia 1942.