Ćus families are Croats and they are mostly from Pazin. In the past century, relatively most of Croatian residents bearing this family name were born in Pazin and Pula. In Ćusi in Pazin area every third inhabitant had the family name Ćus.
Prevalence
About 70 people with faimily name Ćus live in Croatia today, in 30 households. There were 40 of them in the middle of the past century, and their number increased by 90 percent. They are located in 6 Croatian counties, in 9 cities and 7 other places, mostly in Pazin (25), Pula (10), Varazdin (<10), Cusi in Pazin area (<10), and in Rijeka (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.