Košara families are Croats and they are mostly from Rovinj area. In the past century, relatively most of Croatian residents bearing this family name were born in Pula and in Rovinj area. In Putini in Rovinj area nearly every inhabitant had the family name Košara.
Prevalence
About 120 people with faimily name Košara live in Croatia today, in 50 households. There were 70 of them in the middle of the past century, and their number increased by 70 percent. They are only located in four Croatian cities and 11 other places, mostly in Rovinj (40), Putini in Rovinj area (30), Pula (20), Balici I in Pazin area (15), and in Labin (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.