In Croatia, Košeto families are generally Croats (from Novigrad area ), very rarely Italians (from Porec area ), and barely Hungarians. In the past century, relatively most of Croatian residents bearing this family name were born in Porec and Pula. In Broskvari in Porec area nearly every inhabitant had the family name Košeto.
Prevalence
About 50 people with faimily name Košeto live in Croatia today, in 16 households. There were 20 of them in the middle of the past century, and their number more than doubled. They are only located in threee Croatian cities and 5 other places, mostly in Broskvari in Porec area (15), Tar (10), Pula (10), Labinci in Novigrad area (<10), and in Porec (<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.