Kočiš families are mainly Croats and they are mostly from Prelog , rarely Hungarians (from Osijek ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Cakovec.
Prevalence
About 310 people with faimily name Kočiš live in Croatia today, in 150 households. There were 370 of them in the middle of the past century, and their number decreased by 20 percent. They are located in the most of Croatian counties, in 19 cities and 51 other places, mostly in Zagreb (70), Gorican in Cakovec area (15), Osijek (15), Slatina (15), and in Djakovo (10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.