In Croatia, Kušmić families are predominantly Croats (from Banja Luka Region (Bosnia) ), rarely Bosniaks (from Bosnian Posavina ). In the past century, relatively most of Croatian residents bearing this family name were born in Banja Luka Region, Bosnia (Banja Luka area) and in Bosanian Posavina (Derventa area).
Prevalence
About 30 people with faimily name Kušmić live in Croatia today, in 16 households. There were 10 of them in the middle of the past century, and their number tripled. They are located in 8 Croatian counties, in 7 cities and threee other places, mostly in Rijeka (10), Zagreb (<10), Petrinja (<10), Pula (<5), and in Sisak (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.