In Croatia, Čemas families are Croats (from Vrbovsko area ). In the past century, relatively most of Croatian residents bearing this family name were born in Vrbovsko area and in Karlovac. In Milani in Vrbovsko area every ninth inhabitant had the family name Čemas.
Prevalence
About 10 people with faimily name Čemas live in Croatia today, in five households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only threee naselja i to in Karlovac (<10), Zagreb (<5), and in Milani in Vrbovsko area (<5).
Outside Croatia
Family name Čemas (including: Cemas , Chemas and Chemass ) is present in 15 countries worldwide.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1927 in source Emigration Commission Zagreb.