In Croatia, Čas families are Croats by relative majority (from the Island of Mljet ), equally Slovenes (from Dubrovnik ). In the past century, relatively most of Croatian residents bearing this family name were born in Dubrovnik.
Prevalence
Only a few people with faimily name Čas live in Croatia today, in two households only. They are located in only threee Croatian places: in Nova Mokosica (<5), Mokosica (<5), and in Babino Polje on the Island of Mljet (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1927 in source Emigration Commission Zagreb.