In Croatia, Loos families are generally Croats (from Novi Vinodolski ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Serbia.
Prevalence
About 20 people with faimily name Loos live in Croatia today, in 11 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in five Croatian cities only: in Zagreb (15), Ogulin (<5), Duga Resa (<5), Novi Vinodolski (<5), and in Korcula on the Island of Korcula (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.