In Croatia, Kološa families are generally Croats (from Ivanec area ), very rarely Slovenes (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Beli Manastir.
Prevalence
About 20 people with faimily name Kološa live in Croatia today, in 6 households. They are located in only four Croatian places: in Varazdin (<5), Ogulinec (<5), Lipovnik in Ivanec area (<5), and in Starigrad (<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.