Kušan families are Croats and they are mostly from Petrinja area. In the past century, relatively most of Croatian residents bearing this family name were born in Sisak and Zabok. In Lug Zabočki in Zabok every third inhabitant had the family name Kušan.
Prevalence
About 400 people with faimily name Kušan live in Croatia today, in 170 households. There were 590 of them in the middle of the past century, and their number decreased by 30 percent. They are located in 9 Croatian counties, in 17 cities and 43 other places, mostly in Lug Zabocki (70), Zagreb (60), Sisak (25), Karlovac (20), and in Letovanic in Petrinja area (20).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.