In Croatia, Kossi families are Croats (from Krizevci ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Bjelovar.
Prevalence
About 30 people with faimily name Kossi live in Croatia today, in 12 households. There were 20 of them in the middle of the past century, and their number increased by 50 percent. They are located in 6 Croatian counties and 5 other places, mostly in Krizevci (10), Split (<10), Selce (<10), Podstrana in Solin area (<5), and in Nedelisce in Cakovec area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.