In Croatia, Koša families are Croats (from Djakovo area ). In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Djakovo area.
Prevalence
About 60 people with faimily name Koša live in Croatia today, in 19 households. There were 40 of them in the middle of the past century, and their number increased by 30 percent. They are located in 9 Croatian counties, in 7 cities and 9 other places, mostly in Osijek (10), Zagreb (<10), Stari Mikanovci in Djakovo area (<10), Kutina (<10), and in Zebanec Selo in Mursko Sredisce area (<10).