In Croatia, Dermer families are Croats (from Novska ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and in Orahovica area.
Prevalence
Only a few people with faimily name Dermer live in Croatia today, in four households only. They are located in four Croatian counties and two other places, mostly in Zagreb (<5), Lipik (<5), Hrvatska Kostajnica (<5), Fericanci in Orahovica area (<5), and in Banova Jaruga (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1926 in source Emigration Commission Zagreb.